¶ 1 Appellants, Leon F. Wright and Stephen Freeland, bring these appeals from their respective judgments of sentence,1 which were imposed following their convictions by a jury of murder in the second degree under the pre-amended Crimes Code.2 We affirm.
¶ 2 This case commenced in the summer of 1969, when on the night of July 18,1969, York City Police Officer Henry Schaad was wounded by gunfire while traveling through a predominantly African American *898neighborhood that was the scene of racial unrest. Two weeks thereafter, Officer Schaad died as a result of the gunshot wounds. At the time he was shot, Officer Schaad was a passenger in a converted bank delivery vehicle, which was thought to be an impervious “armored car,”3 but which proved vulnerable to large caliber rifle rounds. While these facts are undisputed, almost every other fact of this case was the subject of deep disagreement at trial.
¶ 3 The Pennsylvania State Police initially conducted an investigation of the shooting, but terminated that investigation four months later, in November of 1969, without identifying any suspects. One witness, Barbara Gaines, provided a statement to the York City Police Department that Stephen Freeland shot a rifle at the police vehicle, but shortly thereafter, when given the opportunity, she professed an inability to identify him as the shooter. As a result, the York City police did not pursue the matter against Stephen Freeland. Nor were charges filed against anyone else at that time. Thereafter, little work was done on the case for thirty years.4
¶ 4 In 1999, the York City police again interviewed Ms. Gaines,5 who then signed a statement typed by the police, which stated that Mr. Freeland had in fact fired a rifle round at the armored car on that July 1969 night. A grand jury investigation followed,6 and the York City police *899conducted an extensive investigation, interviewing more than 400 witnesses, including witnesses who identified each of the appellants as firing shots on the night in question.
¶ 5 Leon Wright appeared without counsel before the grand jury in August 2001 and, although he was advised along with several other witnesses of his right to counsel and his right not to incriminate himself, he nonetheless testified. Stephen Freeland also appeared before the grand jury in August 2001, but invoked his right to silence. At the conclusion of the grand jury proceedings, which spanned almost two years,7 homicide charges were filed on October 30, 2001, against both Mr. Wright and Mr. Freeland. Both filed pre-trial motions, including applications to dismiss the prosecutions by reason of the delay between the 1969 date of the incident and the 2001 date of their respective arrests. The eminent Judge Edward G. Biester was specially assigned by the Pennsylvania Supreme Court to rule on the pre-arrest delay applications, and following an eviden-tiary hearing in November 2002, denied the motions. A separate hearing was held in December 2002, before the distinguished Judge John C. Uhler, to consider appellants’ remaining pre-trial motions, which were denied.8 The matter proceeded to a jury trial in March 2003, before the learned York County President Judge John H. Chronister.
¶ 6 The trial lasted nearly two weeks. Although several witnesses described Stephen Freeland as being in possession of a large and powerful rifle, that weapon was never produced as evidence. Stephen Free-land testified on his own behalf and denied shooting at the police vehicle. Leon Wright did not testify at trial, but, upon motion of the Commonwealth, a redacted version of his grand jury testimony was admitted as evidence, which included his denial that he had shot at the vehicle. The remaining evidence against Leon Wright was contradictory — ranging from the testimony of Wright’s own brother, who testified that he saw Wright fire a shotgun at the vehicle in which Officer Schaad was riding,9 to one witness who said that Wright had a pistol,10 to one who testified that Wright had a rifle with a scope on it,11 to yet another witness who testified that Wright did not shoot any weapon at all.12 There was also testimony from Commonwealth witnesses that Stephen Freeland and Leon Wright were among as many as ten people who were armed with rifles that night,13 and that there were multiple shots *900fired at the police vehicle.14 At the conclusion of trial, both men were convicted of second degree murder, and thereafter sentenced to the terms of imprisonment set out above. These separate appeals followed, which we have now consolidated for purposes of addressing the questions they present.
¶ 7 The first argument of both appellants is directed to the extraordinary delay that transpired between the shooting of Officer Schaad and the fifing of charges against them. Although the Pennsylvania Supreme Court, in Commonwealth v. Scher, 569 Pa. 284, 808 A.2d 1204 (2002) (Opinion Announcing the Judgment of the Court), cert. denied, 538 U.S. 908, 123 S.Ct. 1488, 155 L.Ed.2d 228 (2003), sought to resolve the issue confronted by trial courts when there has been a significant period of delay between a crime and the prosecution of that crime, that Court was unable to agree on a controlling standard as to when such delay constitutes a due process violation.15 The following divergent views of the members the Court reveal that absence of concord on this issue of extensive pre-arrest delay:
—Madame Justice Newman, who penned the lead opinion, expressed the view that in order to demonstrate a constitutional violation a “defendant must first show that the delay caused him actual prejudice,” and that the Commonwealth’s delay “was the product of intentional, bad faith, or reckless conduct -” Id. at 313, 803 A.2d at 1221.
—Mr. Justice Castille, in a Concurring Opinion, agreed that a defendant must first show actual prejudice, but on the issue of delay he was of the mind that the defendant must demonstrate that the delay “was intentionally undertaken by the prosecution to gain a tactical advantage over the defendant.” Id. at 332, 803 A.2d at 1233.
—Mr. Justice Nigro, in a Concurring Opinion, agreed that a defendant must first show actual prejudice, but did not express an opinion on the validity of the Commonwealth’s actions, and saw “no need to even consider the second prong of the test.” Id., at 340, 803 A.2d at 1238.
—Mr. Justice Saylor, in a Concurring Opinion, also refused to express his view on the standard applicable to the Commonwealth. Id. at 341, 803 A.2d at 1239.
—Mr. Chief Justice Zappala, joined by Mr. Justice, now Chief Justice, Cappy, disagreed with the other four Justices on the threshold question of whether the defendant Scher had been prejudiced by the delay in prosecuting the charges against him, since the delay was shown to have “deprived him of evidence critical to his defense.” Id. at 380, 803 A.2d at 1262. As for the governing standard, the author quoted the Supreme Court’s prior Majority Opinion in Commonwealth v. Snyder, 552 Pa. 44, 62, 713 A.2d 596, 605 (1998), in which the Court held that a due process violation will be found to have occurred “if no additional evidence appears, the delay results in *901actual prejudice, and there are no proper reasons for postponing the defendant’s arrest.” Id. at 357, 803 A.2d at 1248.
—Former Chief Justice Flaherty did not participate in the decision of the Court.
Thus, it is clear that there was no consensus in Scher about the standards to be applied in pre-arrest delay cases.
¶ 8 Consequently, in our view, the standards set out by the Supreme Court in Commonwealth v. Snyder, 552 Pa. 44, 713 A.2d 596 (1998), and the subsequent application of those standards in the en banc decision of this Court in Commonwealth v. Snyder, 761 A.2d 584 (Pa.Super.2000) (en banc), appeal denied, 572 Pa. 703, 813 A.2d 841 (2002), are the touchstones upon which we must analyze the claim of appellant.
¶ 9 The Supreme Court in Snyder held that pre-arrest delay constitutes a due process violation where there has occurred “actual prejudice to the defendant” and there existed “no proper reasons for postponing the defendant’s arrest.” Commonwealth v. Snyder, supra, 552 Pa. at 62, 713 A.2d at 605. This Court, thereafter, stated that “even in the face of prejudice, delay is excusable if it is a derivation of reasonable investigation. ” Commonwealth v. Snyder, supra, 761 A.2d at 587 (emphasis supplied), citing Commonwealth v. Sneed, 514 Pa. 597, 526 A.2d 749 (1987).16 Thus, it is clear that any inquiry into pre-arrest delay must be directed to both the existence of prejudice to the defendant and to the cause of the delay.
¶ 10 In this case the learned Judge Bies-ter, in rendering his pre-trial ruling on the delay issue, did not apply the Superior Court Snyder “reasonable investigation standard,” but instead measured the evidence against the “intentional, bad faith, or reckless conduct by the prosecution” standard advanced by Madame Justice Newman in her lead Opinion in Scher. 17 See: N.T. November 19, 2002, at pp. 251-252. Since in our view, for the reasons earlier stated, that standard is not the controlling standard, we are unable to accept the basis of the trial court’s conclusion on appellants’ pre-arrest delay claim. As a result, we are obliged to conduct our own review of the record, applying the standards pronounced by the Supreme Court and this Court in the Snyder decision, and to reach our own conclusion as to whether appellants’ constitutional rights were violated.
¶ 11 Before proceeding to that examination, however, we must first address the question of where the burden of proof rests in pre-arrest delay cases. In Snyder, this Court noted that the Supreme Court, after finding that the defendant there had sustained actual prejudice, remanded the case to the trial court to specifically address the issue of the Commonwealth’s reasons for the delay in prosecution. On remand “the matter was considered in the light of the burden be*902ing placed on the Commonwealth.” Commonwealth v. Snyder, supra, 761 A.2d at 586. We then opined that “this [assignment of the burden] was to be expected since on an issue of the propriety for a delay in prosecution, substantially all of the evidence is in the hands of the Commonwealth.” Id. 18
¶ 12 Taking our direction from the procedure described in Snyder, we deem it appropriate that in extended pre-arrest delay cases there should be a shifting burden, with the initial burden upon the accused to establish that the pre-arrest delay caused actual prejudice, and the subsequent burden upon the Commonwealth to provide a reasonable basis for the extended delay in prosecuting the crime. See: United States v. Sowa, 34 F.3d 447 (7th Cir.1994), cert. denied, 513 U.S. 1117, 115 S.Ct. 915, 130 L.Ed.2d 796 (1995); Howell v. Barker, 904 F.2d 889 (4th Cir.1990), cert. denied, 498 U.S. 1016, 111 S.Ct. 590, 112 L.Ed.2d 595 (1990). Such an approach fairly reflects the ability of the respective parties to produce evidence within their control.
¶ 13 With these shifting burdens in mind, it is helpful to compare the Commonwealth’s efforts undertaken in the Snyder and Scher cases, which were ultimately deemed reasonable, to the effort undertaken in this case. This Court in Snyder summarized the relevant facts as follows:
At the hearing before Judge Mundy, the Commonwealth assumed the responsibility of going forward with the evidence, as well as, implicitly, the burden of proof that the reasons for the delay were both valid and proper. In order to *903do so, it called as witnesses the decision and policy-makers who were in authority, from the time of the fatal arson to the time of appellant’s arrest. The District Attorney of Luzerne County, at the time of the fatal fire, Robert J. Gillespie, Jr., established that the victims were appellant’s wife, Diane, and his 36 day-old son, Brian, and that Keith Snyder, appellant, was a suspect. Two aspects of the case which were problematic, were the burn time of the fire and the presence of the drug tuinal in Diane’s bloodstream. He opined that, while he felt there was sufficient evidence to arrest appellant, he was not satisfied that there was enough to achieve a conviction. Gillespie was in office from January 1982 to December 1985. In the fall of 1984, he was authorized to empanel what he described as the first investigating Grand Jury in his county’s history, to investigate several criminal matters, including the Snyder investigation. At the time of his departure from office, he felt that there was insufficient evidence to sustain a conviction. Bernard Podcasy succeeded Gillespie and served until January, 1988. He received a unanimous Grand Jury report in August of 1986 which recommended that, while there was unequivocal evidence of incendiary origin, the evidence to support an indictment was insufficient. The panel recommended vigorous pursuit of the investigation. Other than pursuit of a fruitless anonymous tip and being immersed in current business, there was no especial proactivity on the Snyder matter during the remainder of his term. Corréale Stevens served from January, 1988 to July, 1991. He was briefed on the case and had some key staff members review the matter, but determined thereafter that there was not enough to warrant an arrest. His overall view as to older unsolved cases was that they were primarily police matters. (The investigations were being pursued by the Wright Township Police and the Pennsylvania State Police).
Jerome Cohen served as District Attorney for five months and took no action. He, as did Stevens, stated that any inactivity was not for the purpose of achieving tactical advantage. Robert Martz was a regional chief for the Pennsylvania State Police. He reviewed the investigation file on six to eight occasions and consulted with his commander as well as District Attorney Stevens. Martz considered it an open investigation. Joseph A. Jacob, the Chief of Police of Wright Township, advised that he reviewed the evidence two times a year and did not repetitively re-interview the witnesses since to do so is often counterproductive; he had conferences with experts and other law enforcement persons on numerous occasions, maintained periodic contact on the case with the State Police, and maintained observation of the suspect. When, as a result of District Attorney Olszewski’s reappraisal of the case, renewed interviews were conducted he found that certain witnesses who had had an allegiance to the suspect were more forthcoming when a common employer closed its operation and they were no longer co-employees of appellant. The key to the eventual institution of criminal proceedings came after Peter Paul Olszewski, Jr., took office as District Attorney in 1992. [Following an exhaustive new investigation, charges were filed against the defendant within two years.]
Commonwealth v. Snyder, supra, 761 A.2d at 587-588.
¶ 14 The factual history in Scher, as recorded in the lead Opinion of the Supreme Court, is as follows:
*904On June 4, 1976, at 11:30 a.m., two days after his [first] statement to Trooper Hairston, Scher came to the District Attorney’s Office at the Susquehanna County Courthouse in Montrose, at the request of the investigators, and gave a statement. At the interview were Willi-ard Collier, the detective for the Susquehanna County District Attorney’s office, Troopers John Salinkas and John Fek-ette of the Pennsylvania State Police, and a secretary from the Susquehanna County District Attorney’s office. At the commencement of questioning, Trooper Fekette advised Scher of his Miranda rights, which Scher waived and agreed to be questioned without a lawyer present. During this interrogation, Scher repeated essentially the same story that he had related in his June 2, 1976, statement to Trooper Hairston. Scher explained that he and Dillon had gone to Gunsmoke to go skeet shooting, that they were returning to the trailer to get cigarettes, that Dillon thought he saw a porcupine and ran up the path to pursue it, and that Scher heard the shot and followed after, where he found Dillon lying on the ground with a gunshot wound to the chest. One noteworthy difference between this second statement and the June 2, 1976, statement was that Scher said that he had placed the sixteen-gauge shotgun against a tree, whereas his June 2, 1976, statement indicated that he had placed the loaded shotgun on the metal gun stand. When asked whether he and Dillon had any disagreements, Scher said, “No. We were talking about this rumor. I told him I was thinking of leaving town. It was rough on him. He sat and told me I was just a quitter and chicken — ‘don’t run away ... it was just small people talking.” ’ After giving this answer, Scher became angry, terminated the interview, and left the room. Edward Little, the District Attorney of Susquehanna County from 1968 to 1980, testified at pretrial hearings on Scher’s Motion to Dismiss as to the state of the investigation in June of 1976, and explained why no charges were filed during his tenure in office. Dr. James Grace, a general practitioner who conducted an autopsy of Dillon on June 3, 1976, had issued a report that explained, “history given of [Dillon’s death] having been involved in a hunting accident,” and listed the cause of death as “gunshot wound of the chest,” but made no determination whether the death was the result of a homicide. Coroner Co-narton, who was present when Scher gave his June 2, 1976 statement to Trooper Hairston, had determined that Dillon’s death was accidental and had listed this as the manner of death on Dillon’s death certificate. Although Detective Collier had a strong belief that Dillon’s death may have been a murder rather than an accident, and expressed this opinion in a June 9, 1976, report to Little, Scher was not arrested. Little explained that he, too, was not convinced that Dillon’s death was an accident and requested that Coroner Conarton delay issuance of the death certificate in order to allow additional time to conduct the investigation. Little testified, however, that he never brought charges against Scher because he felt that there was insufficient evidence of murder to prosecute the case successfully.
Laurence Kelly succeeded Little as District Attorney of Susquehanna County in 1980, and held that office until 1988. Little testified that he had no discussions with Kelly regarding the investigation into Dillon’s death. Kelly confirmed that: (1) he had no conversation with either Little or Detective Collier concerning Dillon’s death; (2) he did not *905know where in the office the investigative file on the Dillon matter was located, nor did he look for it; (3) he did not initiate any investigation concerning the death of Dillon; (4) he gathered no additional evidence into Dillon’s death; (5) he conducted no review of the evidence gathered during the initial investigation; and, (6) he never met with anyone from the Pennsylvania State Police regarding the Dillon case. For eight years, therefore, the investigation into the Dillon matter was dormant.
* * * *
Jeffrey Snyder was the District Attorney of Susquehanna County from 1988 until 1996. In 1989, District Attorney Snyder received a telephone call from A1 Riemel, a social acquaintance of the Snyder family and the brother-in-law of Martin Dillon, requesting a meeting at the home of Lawrence Dillon, the father of Martin Dillon. Prior to this telephone call, Snyder had not conducted any review of the Dillon case, but had the District Attorney’s Office investigative file retrieved from storage in order to review the matter. District Attorney Snyder reviewed the Dillon file, but found that it contained “little to no' information” and decided to meet with the state police to discuss the status of the case. At the behest of Lawrence Dillon, Snyder arranged meetings with the original Pennsylvania State Police investigators, Troopers John Salinkas and John Fekette, and reviewed the state police investigative file. District Attorney Snyder agreed to have the facts as developed by the investigation to that point presented to a panel of medical experts who were holding a conference at the University of Pennsylvania, in Philadelphia. In May of 1989, Snyder went to the conference to “get some consensus from those in the forensic field” about whether Dillon died by accident or was murdered. The conference attendees consisted of medical examiners, pathologists, and coroners. Three members of the Pennsylvania State Police accompanied Snyder to the conference, along with Dr. Isadore Mihalikis, a forensic pathologist who actually presented the case to the conference attendees. Following this presentation, a significant majority of the conference members opined that a self-inflicted gunshot wound, either accidental or intentional, caused Dillon’s death. Snyder viewed this vote as “an overwhelming defeat for the prosecution” and concluded that no successful prosecution could be mounted at that time. Although the investigation remained open, the Susquehanna County District Attorney’s Office took no substantial steps to advance the investigation for the next five years.
In 1990 and 1991, Lawrence Dillon retained private investigators to look into the case and unsuccessfully petitioned to have Dillon’s body exhumed for another autopsy. At that time, Snyder felt that the efforts of the Dillon family were counterproductive to a successful resumption of the investigation. However, in 1994, again at the urging of the Dillon family, two Pennsylvania State Police officers who had no previous involvement in the case were brought in to reexamine the evidence, conduct interviews with witnesses, and, in Snyder’s words, “winnow out the rumor, the innuendo, that in my opinion riddled much of the material that was already on file.” The “rumor” referred to by Snyder was the report that Scher and Dillon’s wife, Patricia, had been having an affair before Dillon’s death. These rumors were known to investigators at the time of the incident but, for reasons that do not appear in the record, were not pursued. The officers who were placed in charge *906of the state police investigation in 1994 reinterviewed witnesses and interviewed additional witnesses who had not been questioned in 1976, Based on this renewed investigation, the Commonwealth finally developed evidence of a motive for Scher to murder Dillon that had not been developed in the earlier investigation: namely, that Scher and Patricia had been having an extramarital affair prior to Dillon’s death. In 1995, the Commonwealth successfully petitioned, in spite of the objection of Patricia Scher, to have Dillon’s body exhumed for a second autopsy. Following this second autopsy in April of 1995, the Commonwealth obtained support from its expert forensic pathologist, Dr. Mi-halikis, for the position that the physical evidence of Dillon’s gunshot wound was not consistent with an accidental discharge of a dropped shotgun. The Commonwealth concluded that it possessed sufficient evidence to prosecute murder charges successfully and charged Scher with first-degree murder in June of 1996.
Commonwealth v. Scher, supra, 569 Pa. at 294-298, 803 A.2d at 1210-1212 (footnotes omitted).
¶ 15 The pre-trial hearing in this case established the contrasting dearth of activity that occurred here, specifically:
• The District Attorney of York County at the time of the shooting was unavailable to testify at the pre-trial hearing on delay, but his first assistant testified that in 1969 it was not the function of the District Attorney to investigate crimes, and that the District Attorney depended on the State and local police to investigate a crime, produce the evidence and then bring the case to the District Attorney to be prosecuted. Thus, in the months immediately following the shooting, the District Attorney’s Office undertook no investigation of this shooting. See: N.T. November 19, 2002, pp. 122-127.
• Over the" next sixteen years, from 1970 to 1986, there were four different District Attorneys, none of whom undertook an investigation of the Schaad shooting.19 In fact, in the words of one of the prosecutors, the Schaad case “was not on any of the radar screens.” N.T. November 19, 2002, p. 139.
• In 1986 H. Stanley Rebert became the York County District Attorney, and he held the office from 1986 up to the time of the filing of this appeal. He testified that upon taking office in 1986, he had no discussion with his predecessor regarding open cases, and there was no open file on the Schaad matter. Moreover, during his time as District Attorney, he never contacted the Yoi'k City Police Department to check on the status of this case. See: N.T. November 19, 2002, p. 134. Mr. Rebert further testified that during his tenure there were two instances prior to the present investigation, in which the Schaad shooting came up, and in both instances it was a collateral matter where a defendant was attempting to obtain a benefit in his unrelated case by offering to reveal information on this case — in neither instance, however, was the information considered substantial, and no follow-up investigation ensued. See: N.T. November 19, 2002, pp. 127-134; 147-174.
*907Thus, it was not until 1999 that District Attorney Rebert launched the investigation that culminated in this prosecution, and while all would agree that this investigation was comprehensive, the question before this Court is why the field of investigation was allowed to lie fallow for thirty years while witnesses died and evidence disappeared. Based on our review, while emphasizing that there is absolutely no intent to find fault or assess blame, we, nonetheless, can find no reasonable basis for such inaction, and the excuses offered by the Commonwealth are simply inadequate to explain its passivity in failing to pursue an investigation of an unlawful killing.
¶ 16 This conclusion requires us to take the further step of examining the question of prejudice.20 Appellants were convicted of second degree murder (an offense which has since been re-codified as third degree murder).21 In order to sustain this conviction, the Commonwealth was required to prove that the murder was the result of a malicious act, which in turn required the Commonwealth to prove that appellants were either the individuals who caused the death of Officer Schaad or were accomplices to that individual.22
¶ 17 In order to prove the direct culpability of either appellant, the Commonwealth was required to establish, beyond a *908reasonable doubt, the source of the bullet that killed Officer Schaad. However, the Commonwealth did not do so since the forensic evidence produced by the Commonwealth consisted only of the following:
• Dr. Isidore Mihalakis, a forensic pathologist, testified that Officer Schaad “died of a rifle wound to the chest and consequences thereof.” N.T. March 7, 2003, p. 1022. He further testified that during his autopsy of the body, he retrieved the bullet that caused the fatal injury.
• Corporal Eugene Pete Baltimore, Jr., of the Pennsylvania State Police, testified as a ballistics expert on direct examination, that from his tests he could only determine that the bullet came from either a .30 caliber or 8 millimeter rifle, “but [he] couldn’t determine, specifically, if it was one or the other.”23• N.T. March 10, 2003, p. 1424.
• Mr. Alfred Schwoebel, an expert in “trace metal analysis,” testified that the wounds in Officer Schaad’s torso and the wound in his thigh came either from the same bullet, or two bullets from the same manufacturer’s lot. He could not, however, further identify which manufacturer that would have been.
Clearly, the inability of the Commonwealth’s forensic witnesses to accurately identify the size of fatal bullet, or even the make, model, or country of origin of the rifle from which it was fired, made it impossible for the appellants to defend against the Commonwealth unprovable as*909sertion that one of them had fired the fatal bullet.
¶ 18 However, since the Commonwealth presented these cases to the jury on the alternative theory of accomplice liability, we must examine appellants’ culpability under that theory as well. In relevant part the jury was instructed:
You may find the defendant guilty of a crime on the theory that he was an accomplice as long as you are satisfied beyond a reasonable doubt that the crime was committed and that the defendant was an accomplice of the person who committed it.
And it does not matter whether the person who actually committed the crime is a defendant or not. You may find that somebody else [sic] other than one of these two defendants actually fired the shot, and even if that person is not charged, you can still find that these defendants are guilty if you find their conduct meets the definition of accomplice that I just gave you and it was proven that the other person did it.
And like everything else in a criminal case, the Commonwealth has to prove that either of these defendants was an accomplice beyond a reasonable doubt. So to try to put it into language that is a little bit simpler to understand, that is not quite so legal, what we are looking for is that there was joint action, that they were acting together, that they had a common plan.
Now, in order to show that they are accomplices, the Commonwealth does not have to bring in testimony where it shows there was a specific conversation, that they agreed to be accomplices and prove it to you by specific agreement. The Commonwealth could show that they are accomplices by showing the actions and allowing you to infer from the way and manner they acted that they were acting jointly and therefore, that they were accomplices.
N.T. March 13, 2003, 1874-1875. Thus, the jury was instructed that appellants could be found liable of second degree murder under the theory of accomplice liability regardless of whether the Commonwealth could accurately identify the source of the fatal bullet,24 and in order to sustain its burden to prove this accomplice theory the Commonwealth was required to demonstrate that appellants were present, that appellants were, in concert with others, shooting at the armored vehicle with a mens rea that qualified as malice, and that Officer Schaad died as a result. Since the delay in this case did not prevent appellants from defending against this theory, either by attacking the memories of the Commonwealth’s witnesses or, in the case of Freeland, taking the stand and denying involvement, we are compelled to conclude that regardless of the unjustifiable delay the constitutional rights of appellants to a fair trial were not violated.
¶ 19 In light of our decision on the appellants’ common issue we must now address those issues that are unique to each appeal.
Appeal No. 1203 MDA 2003
¶ 20 Leon Wright, in appeal No. 1203 MDA 2003, presents these further questions for our review:25
*910Whether the evidence adduced by the Commonwealth was insufficient to support the verdict?
Whether the trial court erred in overruling a motion for change of venue or venire because of unusually extensive and inflammatory pretrial publicity? Whether the trial court erred in not granting a motion to suppress appellant’s grand jury testimony and in admitting into evidence a redacted transcript of his testimony after appellant summarily waived his right to counsel in a general group colloquy?
¶ 21 The applicable standard of review governing a sufficiency challenge requires the reviewing court to determine:
whether, viewing the evidence in the light most favorable to the Commonwealth as verdict winner, together with all reasonable inferences therefrom, the trier of fact could have found that each and every element of the crimes charged was established beyond a reasonable doubt. Commonwealth v. Montini, 712 A.2d 761, 767 (Pa.Super.1998); Commonwealth v. Swann, [431 Pa.Super. 125] 635 A.2d 1103, 1105 (Pa.Super.1994), appeal denied, 538 Pa. 669, 649 A.2d 671 (1994). In making this determination, we must evaluate the entire trial record and consider all the evidence actually received. Commonwealth v. Rodriquez, [449 Pa.Super. 319] 673 A.2d 962, 965 (Pa.Super.1996). It is within the province of the fact finder to determine the weight to be accorded each witness’s testimony and to believe all, part, or none of the evidence introduced at trial. Commonwealth v. Molinaro, [429 Pa.Super. 29] 631 A.2d 1040, 1042 (Pa.Super.1993). The facts and circumstances established by the Commonwealth need not be absolutely incompatible with the defendant’s innocence, but the question of any doubt is for the trier of fact unless the evidence is so weak and inconclusive that, as a matter of law, no probability of fact can be drawn from the combined circumstances. Commonwealth v. Seibert, [424 Pa.Super. 242] 622 A.2d 361, 363 (Pa.Super.1993), appeal denied, 537 Pa. 631, 642 A.2d 485 (1994) (citing Commonwealth v. Sullivan, 472 Pa. 129, 150, 371 A.2d 468, 478 (1977) and Commonwealth v. Libonati, 346 Pa. 504, 508, 31 A.2d 95, 97 (1943)). “This standard is equally applicable to cases where the evidence is circumstantial rather than direct so long as the combination of the evidence links the accused to the crime beyond a reasonable doubt.” Commonwealth v. Swerdlow, [431 Pa.Super. 453] 636 A.2d 1173, 1176 (Pa.Super.1994) (citing Commonwealth v. Hardcastle, 519 Pa. 236, 246, 546 A.2d 1101, 1105 (1988)).
Commonwealth v. Randall, 758 A.2d 669, 674 (Pa.Super.2000), appeal denied, 564 Pa. 707, 764 A.2d 1067 (2000).
¶ 22 Appellant Wright argues that the Commonwealth’s evidence was insufficient because (1) “[n]one of the witnesses corroborate each other,” and (2) “[n]o physical evidence corroborates their testimony.” Brief of Appellant, p. 36. Although the record supports appellant’s claim that the testimony of various witnesses was inconsistent, and even clearly contradictory in certain respects, it is not the function of this Court to resolve inconsistencies in the evidence, and we are not free to substitute our judgment for that of the fact finder. Commonwealth v. Johnson, 576 Pa. 23, 37, 838 A.2d 663, 671 (2003). Moreover, it bears particular emphasis that the evidence included the testimony of appellant’s brother, Michael Wright, that he himself, along with appellant Wright and appellant Freeland, were all shooting at the armored car on the night Officer Sehaad was killed, and fur*911ther described the types of weapons each of them used that day. N.T. March 6, 2003, at pp. 812-815. This evidence alone, when viewed in the light of the governing standards, was certainly sufficient to support the jury’s conclusion that appellant was at least an accomplice of the principal who fired the fatal bullet, in accordance with the instructions it was given. Thus, there is no basis upon which to grant Wright relief on his sufficiency challenge.
¶ 23 Appellant Wright next argues that the trial court erred in denying his requests for a change of venue or jury venire. The law governing our consideration of these claims has been well summarized by the Pennsylvania Supreme Court:
“The trial court’s decision on appellant’s motions for change of venue/venire rests within the sound discretion of the trial judge, whose ruling thereon will not be disturbed on appeal absent an abuse of that discretion.” Commonwealth v. Marinelli, 547 Pa. 294, 690 A.2d 203, 213 (1997), cert. denied, 523 U.S. 1024, 118 S.Ct. 1309, 140 L.Ed.2d 473 (1998); Commonwealth v. Paolello, 542 Pa. 47, 665 A.2d 439, 450 (1995). “In reviewing the trial court’s decision, our inquiry must focus upon whether any juror formed a fixed opinion of the defendant’s guilt or innocence as a result of the pretrial publicity.” Marinelli, 690 A.2d at 213.
“A change in venue becomes necessary when the trial court concludes that a fair and impartial jury cannot be selected in the county in which the crime occurred.” Commonwealth v. Bridges, 563 Pa. 1, 757 A.2d 859, 872 (2000), cert. denied, 526[535] U.S. 1021[1102], 122 S.Ct. 2306, 152 L.Ed.2d 1061; Commonwealth v. Karenbauer, 552 Pa. 420, 715 A.2d 1086, 1092 (1998), cert. denied, 526 U.S. 1021, 119 S.Ct. 1258, 143 L.Ed.2d 354 (1999). “Normally, one who claims that he has been denied a fair trial because of pretrial publicity must show actual prejudice in the empanelling of the jury. In certain cases, however, pretrial publicity can be so pervasive or inflammatory that the defendant need not prove actual juror prejudice.” Bridges, 757 A.2d at 872 (internal citations omitted). “Pretrial prejudice is presumed if: (1) the publicity is sensational, inflammatory, and slanted toward conviction rather than factual and objective; (2) the publicity reveals the defendant’s prior criminal record, or if it refers to confessions, admissions or reenactments of the crime by the accused; and (3) the publicity is derived from police and prosecuting officer reports.” Commonwealth v. Weiss, 565 Pa. 504, 776 A.2d 958, 964 (2001), cert. denied, 535 U.S. 1101, 122 S.Ct. 2303, 152 L.Ed.2d 1059 (2002).
Even where pre-trial prejudice is presumed, “a change of venue or venire is not warranted unless [the defendant] also shows that the pre-trial publicity was so extensive, sustained, and pervasive that the community must be deemed to have been saturated with it, and that there was insufficient time between the publicity and the trial for any prejudice to have dissipated.” Karenbauer, 715 A.2d at 1092; [Commonwealth v.] Ruccil, 543 Pa. 261, 670 A.2d 1129 (1996)]; Commonwealth v. Breakiron, 524 Pa. 282, 571 A.2d 1035, 1037 (1990), cert. denied, 498 U.S. 881, 111 S.Ct. 224, 112 L.Ed.2d 179 (1990).
In testing whether there has been a sufficient cooling period, a court must investigate what a panel of prospective jurors has said about its exposure to the publicity in question. This is one indication of whether the cooling period has been sufficient. Thus, in determining the efficacy of the cooling period, a court will consider the direct *912effects of publicity, something a defendant need not allege or prove. Although it is conceivable that pre-trial publicity could be so extremely damaging that a court might order a change of venue no matter what the prospective jurors said about their ability to hear the case fairly and without bias, that would be a most unusual case. Normally, what prospective jurors tell us about their ability to be impartial will be a reliable guide to whether the publicity is still so fresh in their minds that it has removed their ability to be objective. The discretion of the trial judge is given wide latitude in this area.
Commonwealth v. Chambers, 546 Pa. 370, 685 A.2d 96, 104 (1996), cert. denied, 522 U.S. 827, 118 S.Ct. 90, 139 L.Ed.2d 46 (1997) (citing Breakiron, 571 A.2d at 1037-1038 n. 1).
Commonwealth v. Drumheller, 570 Pa. 117, 132-133, 808 A.2d 893, 902-903 (2002), cert. denied, 539 U.S. 919, 123 S.Ct. 2284, 156 L.Ed.2d, 137 (2003) (footnote omitted).
¶ 24 Judge Uhler considered all the material offered by appellant at the pre-trial hearing, and concluded that “the way to assess whether defendant Wright [can] have a fair trial in York County is to engage in a thorough voir dire of the prospective jury panel regarding the pretrial publicity to determine whether the community has been so saturated by it.” Slip Opinion, December 30, 2002, Uhler, J., p. 24. Thereafter, more than three months elapsed,26 before the trial judge, President Judge Chronister, began, on March 3, 2003, an extensive and thorough voir dire of . the potential jurors, the result of which was the impaneling of a jury of twelve jurors and three alternate jurors who had testified that they had no fixed opinion on the guilt or innocence of the defendants. Upon our review of this record, we detect no basis upon which to conclude that the trial court abused its discretion in denying the .motion for change of venue or jury venire. See: Commonwealth v. Tharp, 574 Pa. 202, 830 A.2d 519 (2003), cert. denied, — U.S. —, 124 S.Ct. 2161, 158 L.Ed.2d 736 (2004).
¶ 25 Appellant Wright’s final question is directed to the denial by the trial court of his motion to suppress his grand jury testimony. Wright argues that his rights under the Sixth Amendment were violated because, prior to his testimony before the grand jury, he was advised of his right to counsel and his right to remain silent while in the company of eleven other witnesses who were also scheduled to appear before the grand jury.27
¶ 26 The Investigating Grand Jury Act, 42 Pa.C.S. §§ 4541 et seq., does not prohibit a witness from waiving his right to *913counsel or giving incriminating testimony, provided appropriate warnings have been given. Appellant Wright cites no support for his claim that the warnings had to have been given individually to each witness in order for them to be effective. In fact, the method employed in this case to acquaint witnesses with them rights was the same as was followed in the case of Commonwealth v. Williams, 388 Pa.Super. 153, 565 A.2d 160, 163-164 (1989). Moreover, based upon our review of the record, we are satisfied that Judge Uhler, as presiding judge of the grand jury, fully and fairly advised appellant Wright of his constitutional and statutory rights,28 and there *914is no basis upon which to afford him relief on this claim.29
*915¶ 27 Consequently, finding no meritorious issues in the appeal of Leon Wright we must affirm the judgment of sentence.
Appeal No. 1282 MDA 2003
¶28 Stephen Freeland, in appeal No. 1282 MDA 2008, presents these additional questions for our review:30
"Whether appellant is entitled to a new trial because the verdict of guilty on the charge of Murder in the Second Degree was against the weight of the evidence?
Whether the trial court erred in admitting into evidence hospital and autopsy photographs of the victim, and allowed the autopsy photograph to go out with the jury during its deliberation?
Whether the trial court erred in refusing to charge the jury on the crime of involuntary manslaughter?
"Whether the trial court erred in imposing such a “disparate” sentence on appellant as compared to the co-defendant?
¶ 29 A weight of the evidence challenge is addressed to the discretion of the trial court, and appellate review of a weight claim is a review of the exercise of discretion of the trial court in denying the claim, and not a review of the underlying question of whether the verdict is against the weight of the evidence. Commonwealth v. Brown, 538 Pa. 410, 435-436, 648 A.2d 1177, 1189 (1994). Moreover,
because the trial judge has had the opportunity to hear and see the evidence presented, an appellate court will give the gravest consideration to the findings and reasons advanced by the trial judge when reviewing a trial court’s determination that the verdict is against the weight of the evidence. Commonwealth v. Farquharson, 467 Pa. 50, 354 A.2d 545 (1976). One of the least assailable reasons for granting or denying a new trial is the lower court’s conviction that the verdict was or was not against the weight of the evidence and that a new trial should be granted in the interest of justice. Brown, supra.
Commonwealth v. Widmer, 560 Pa. 308, 319-322, 744 A.2d 745, 751-753 (2000). In light of these standards and the summary of evidence previously provided, there is absolutely no basis upon which to fault the trial court’s conclusion that:
[T]he testimony of the Commonwealth did establish that a group of black youths fired shots at a vehicle causing a policeman’s death, that Leon Wright and Stephen Freeland were among those individuals who fired shots, and that they were at the very least accomplices of the one who fired the shot that killed Henry Schaad.
Slip Opinion, Chronister, P.J., p. 10. This is particularly so since Freeland’s defense was based almost entirely upon the jury accepting as credible his testimony that he *916did not fire any weapon at the police vehicle.
¶ 30 Appellant Freeland next complains that the trial court erred in permitting the Commonwealth to introduce into evidence two photographs: a pre-autopsy photograph of the decedent and a picture of the decedent taken while he was still in the hospital. Before addressing this claim, however, we are compelled to remark the certified record does not contain the photographs about which Freeland complains. Thus, we are precluded from reviewing the question of whether the photographs, which are described by the Commonwealth as “black-and-white” photographs,31 were “gruesome” or “inflammatory”, and we limit our review to the issue of whether they were relevant.32 See: Pa.R.E. 401
¶ 31 The admissibility of photographs falls within the sound discretion of the trial court and only an abuse of that discretion will constitute reversible error. Commonwealth v. Baez, 554 Pa. 66, 720 A.2d 711, 726 (1998), cert. denied, 528 U.S. 827, 120 S.Ct. 78, 145 L.Ed.2d 66 (1999). In exercising that discretion, a trial judge “must determine whether the evidentiary value of the photos outweighs the possibility that they will inflame the minds and passions of the jurors.” Commonwealth v. Begley, 566 Pa. 239, 268, 780 A.2d 605, 622 (2001).
¶ 32 In this case the rationale of the trial judge in permitting the admission of these photographs was set forth in his Opinion to this Court, as follows:
[T]he cause of death is an issue in every murder trial, and in this case there was no stipulation regarding the cause of death. Therefore the cause of death was an issue. Further, the [pre-autop-sy] photograph depicted the location of the victim’s wounds, and was confirmation that he had been struck by bullets fired by the rioters. [It] was not particularly gruesome, and established merely the nature and extent of the victim’s injuries.
Slip Opinion, September 29, 2003, Chronis-ter, P.J., pp. 13-14. The judge further concluded that the same considerations warranted the admission of the hospital photograph into evidence. Since the Pennsylvania Supreme Court has stated that the Commonwealth is entitled to utilize photographs to support its case on the cause of death of the victim, Commonwealth v. Brown, 551 Pa. 465, 485-486, 711 A.2d 444, 453 (1998), cert. denied, 537 U.S. 1187, 123 S.Ct. 1351, 154 L.Ed.2d 1018 (2003),33 there is no basis upon which to disturb the finding of the trial judge that the photographs in this case were relevant.34
*917¶ 38 Freeland next claims that the trial court erred in refusing to instruct the jury on the crime of involuntary manslaughter. Our standard of review of a challenge to the trial judge’s instructions to the jury dictates that we are required to defer to the trial judge’s choice so long as the law is “clearly, adequately, and accurately presented to the jury.” Commonwealth v. Paddy, 569 Pa. 47, 91, 800 A.2d 294, 321 (2002). Moreover, a condition precedent to the grant of a request for a jury instruction is evidence of record that supports a verdict on that charge. See: Commonwealth v. Mayfield, 401 Pa.Super. 560, 585 A.2d 1069 (1991) (en banc) (self-defense).
¶ 34 The statutory offense of involuntary manslaughter occurs when a person causes the death of another person as a direct result of the doing of an unlawful act in a reckless or grossly negligent manner, or the doing of a lawful act in a reckless or grossly negligent manner. See: Crimes Code of 1939, 18 P.S. 4703 (since re-codified at 18 Pa.C.S. § 2504). Since Free-land’s defense was one of his denial of the commission of any acts that could have resulted in Officer Schaad’s death, it may not be claimed that he produced evidence of record that would have required the delivery to the jury of an instruction on involuntary manslaughter. Commonwealth v. Browdie, 543 Pa. 337, 349, 671 A.2d 668, 674 (1996).
¶ 35 Finally, appellant Free-land contends that the trial judge erred in the “disparate” sentence imposed in this case. Since the sentence imposed in this matter was well within allowable statutory maximum, his argument rests upon a challenge to the discretionary aspects of the sentence. An appeal challenging the discretionary aspect of a sentence is not an appeal of right. Rather, an appellant seeking to raise that issue must seek permission from this Court to appeal and must establish that a substantial question exists on the record that the sentence was not appropriate under the Sentencing Code. Commonwealth v. Mouzon, 571 Pa. 419, 435, 812 A.2d 617, 627 (2002); Commonwealth v. Tuladziecki, 513 Pa. 508, 515, 522 A.2d 17, 20 (1987); 42 Pa.C.S. § 9781(b); Pa.R.A.P. 2119(f). Since appellant Freeland has not complied with this requirement, and since the Commonwealth has specifically objected to this omission, this Court must regard the issue as waived. See: Commonwealth v. Archer, 722 A.2d 203, 211 (Pa.Super.1998).35
*918¶ 36 Consequently, finding no meritorious issues in the appeal of Stephen Free-land, we must affirm the judgment of sentence.
¶ 37 Judgment of sentence in appeal No. 1203 MDA 2003 is affirmed.
¶ 38 Judgment of sentence in appeal No. 1282 MDA 2003 is affirmed.
¶ 39 ORIE MELVIN, J., concurs in the result.