MEMORANDUM OPINION AND ORDER
In this civil action, plaintiff seeks to compel the Executive Office for United States Attorneys (“EOUSA”) to disclose “all non-exempt records” responsive to his request brought under the Freedom of Information Act (“FOIA”), 5 U.S.C. § 552. See Compl. [Dkt. # 1]; Am. Compl. [Dkt. # 27]. Defendant moves for summary judgment under Rule 56 of the Federal Rules of Civil Procedure based on its release of records.1 Upon consideration of the parties’ submissions and the relevant parts of the record, the motion will be granted in part and denied in part.
BACKGROUND
The relevant facts are as follows. By letter dated May 12, 2008, plaintiff requested from EOUSA “copies of any and all records ... in whatever format ... that makes [sic] reference to me or relates [sic] to me under my name and/or identifier assigned to my name.” Declaration of John F. Boseker (“Boseker Decl.”) [Dkt. # 16-5], Ex. A. Plaintiff stated that he was “[m]ore specifically ... seeking information generated and/or retained by your agency as a result of the homicide of ‘Tyree Nathaniel Wimbush’, that occurred on or about July 22, 1999, in the City of Danville, Virginia.” Id. Plaintiff requested that his “approval” be sought for “any expenses in excess of $300.00____” Id. In response to EOUSA’s subsequent acknowledgment letter dated June 5, 2008, id., Ex. B, plaintiff returned a form EOUSA had included to revise his request “to try to reduce fees,” stating that he was limiting his request to “[a]ny and all (statements and investigative) information pertaining to me from January 1st of 1999 up until the present,” and again specifying that he sought information pertaining to the Wimbush homicide “within this time frame.” Id., Ex. C (parenthesis in original).
By letter of May 8, 2009, EOUSA purported to release to plaintiff 178 unredacted pages and 48 redacted pages of information. Id., Ex. H. EOUSA withheld 305 pages in full and invoked FOIA exemptions 3, 6, 7(C), 7(D), and 7(F), see 5 U.S.C. 552(b), and Privacy Act exemption (j)(2), see 5 U.S.C. § 552a, as' the bases for its withholdings. Id., Ex. H. In addition, *297EOUSA referred other records that “may or may not be responsive to [plaintiffs] request” to the United States Marshals Service and the Bureau of Prisons (“BOP”) for their review and responses directly to plaintiff. Id. at 2. Plaintiff unsuccessfully appealed EOUSA’s determination to the Office of Information Policy (“OIP”), which added exemption 5 as a basis for withholding information. See id., Ex. L.
Plaintiff filed this action on February 9, 2011. Thereafter, on June 2, 2011, EOU-SA released to plaintiff an additional 36 pages of information, 35 of which contained redactions made pursuant to FOIA exemptions 3, 5, 7(C), 7(D), and 7(F). Id., Ex. N [Dkt. #21-2], In preparing a Vaughn index in support of the instant summary judgment motion, see Vaughn v. Rosen, 484 F.2d 820, 827-28 (D.C.Cir.1973), Boseker determined that EOUSA had miscalculated the initial number of released pages and, accounting also for the additional release in June 2011, clarified that EOUSA released 170 pages in full and 83 pages in part, and withheld a total of 1,738 pages in full that includes 885 pages of grand jury records and 707 pages of “non-responsive/categorically third-party records, (including 160 pages returned from the BOP).” Boseker Decl. ¶¶ 22-24 (parenthesis in original). All of the responsive records were located in plaintiffs criminal case file maintained by the United States Attorney’s Office for the Western District of Virginia (“USAO/WDVA”) where plaintiff was prosecuted and convicted “of multiple counts of criminal statutory violations relating to [a] murder for hire perpetrated upon ... Mr. Wimbush.” Id. ¶ 26; see Plunkett v. U.S., No. 4:04-cr-70083, No. 4:09-cv-80205, 2011 WL 2199174, at *1 (W.D.Va. June 6, 2011) (identifying plaintiff as “a federal inmate serving a life sentence for his convictions in connection with his role in a murder for hire conspiracy....”).
REVIEW STANDARD
Summary judgment may be appropriately granted when “the movant shows that there is no genuine dispute as to any material fact and the movant is entitled to judgment as a matter of law.” Fed. R.Civ.P. 56(a). Courts draw all reasonable inferences from the evidentiary record in favor of the non-moving party. See Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 255, 106 S.Ct. 2505, 91 L.Ed.2d 202 (1986).
“A district court must conduct a de novo review of the record in a FOIA case, and the agency resisting disclosure bears the burden of persuasion in defending its action.” Milton v. U.S. Dep’t of Justice, 783 F.Supp.2d 55, 57 (D.D.C.2011) (citing 5 U.S.C. § 552(a)(4)(B)). In a FOIA case, summary judgment in favor of an agency is warranted where the agency demonstrates that no material facts are in dispute, that it conducted a search of records in its custody or control that was reasonably forecast to divulge all relevant information, Weisberg v. U.S. Dep’t of Justice, 745 F.2d 1476, 1485 (D.C.Cir.1984), and that the information found through the search has either been released to the requestor or is exempt from disclosure. See Skinner v. U.S. Dept. of Justice, 806 F.Supp.2d 105, 111 (D.D.C.2011) (citing Students Against Genocide v. Dep’t of State, 257 F.3d 828, 833 (D.C.Cir.2001)).
When, as here, an agency’s search is questioned, the agency is entitled to summary judgment upon a showing, through declarations that explain in reasonable detail and in a nonconclusory fashion the scope and method of the search, that it conducted a search likely to locate all responsive records. Perry v. Block, 684 F.2d 121, 126 (D.C.Cir.1982). Without contrary evidence of bad faith, the agen*298cy’s amply detailed affidavits are sufficient to demonstrate compliance with the FOIA. Id. at 127. A search does not have to be exhaustive, and whether a search is adequate is determined by methods, not results. Weisberg, 745 F.2d at 1485. An agency’s failure to locate a specific responsive document will not, on its own, render an otherwise reasonable search inadequate. See Brown v. FBI, 675 F.Supp.2d 122, 125-26 (D.D.C.2009) (citing Wilbur v. CIA, 355 F.3d 675, 678 (D.C.Cir.2004)) (other citation omitted).
DISCUSSION
Plaintiffs lengthy opposition to defendant’s motion may be summed up as a challenge to EOUSA’s claimed exemptions and search for responsive records. See Mem. of P. & A. in Opp’n to Def.’s Mot. for Partial Summ. J. (“Pl.’s Opp’n”) [Dkt. #24] at 1 (“Plaintiff opposes summary judgment on the grounds that the EOUSA has improperly withheld agency records that are nonexempt, ... that certain exemptions have been claimed improperly as a matter of law, [and that] the search performed [was] inadequate.”). EOUSA’s sole evidence in support of summary judgment is Boseker’s declaration accompanied by exhibits and a Vaughn index.
1. The Search for Records
“A declarant in a FOIA case satisfies the personal knowledge requirement in [Rule 56(c)(4) ] if in his declaration, [he] attests to his personal knowledge of the procedures used in handling [a FOIA] request and his familiarity with the documents in question.” Barnard v. Dep’t of Homeland Sec., 531 F.Supp.2d 131, 138 (D.D.C.2008) (citations and internal quotation marks omitted). Athough “hearsay in FOIA declarations is often permissible,” id., the person in charge of the search is “the most appropriate person to provide a comprehensive affidavit” about the search. SafeCard Servs., Inc. v. SEC, 926 F.2d 1197, 1201 (D.C.Cir.1991) (citing Meeropol v. Meese, 790 F.2d 942, 951 (D.C.Cir.1986)).
Plaintiff argues that Boseker’s description of the search, Boseker Deck ¶ 27, is “wholly inadequate,” PL’s Opp’n at 3. His argument has merit. Boseker states that the FOIA contact at the USAO/ WDVA, Jo Brooks, “conducted a systematic search for records” and describes generally the type of search that may have been performed. Boseker Deck ¶ 27. Boseker does not claim to have any personal knowledge about that search and he has not proffered Brooks’ declaration describing her search. There is no evidence describing the filing systems that were actually searched and the search terms that were utilized. Nor is there any evidence establishing that all files likely to contain responsive records were searched. Viewing these omissions “in the light most favorable to the requester,” Steinberg v. DOJ, 23 F.3d 548, 551 (D.C.Cir.1994), a factual dispute exists on the adequacy of EOU-SA’s search. Therefore, defendant’s motion for summary judgment with regard to the adequacy of the search will be denied.
2. Defendant’s Claimed Exemptions
Exemption 3
FOIA Exemption 3 covers records that are “specifically exempted from disclosure by statute ... provided that such statute either “(A) [requires withholding] in such a manner as to leave no discretion on the issue,” or “(B) establishes particular criteria for withholding or refers to particular types of matters to be withheld.” 5 U.S.C. § 552(b)(3); see Senate of the Commonwealth of Puerto Rico v. U.S. Dep’t of Justice, 823 F.2d 574, 582 (D.C.Cir.1987).
*299The Federal Rules of Criminal Procedure prohibit disclosure of “matters occurring before [a] grand jury.” Fed.R.Crim.P. 6(e)(2); see In re: Motions of Dow Jones & Co., Inc., 142 F.3d 496, 498-501 (D.C.Cir.1998). Criminal Rule 6(e) qualifies as a statute under Exemption 3 because it was affirmatively enacted by Congress. See Fund for Constitutional Government v. National Archives and Records Service, 656 F.2d 856, 867-68 (D.C.Cir.1981).
The United States Court of Appeals for the District of Columbia Circuit has limited the grand jury exception to material, which, if disclosed, would “tend to reveal some secret aspect of the grand jury’s investigation, such matters as the identities of witnesses or jurors, the substance of testimony, the strategy or direction of the investigation, the deliberations or questions of jurors, and the like.” Senate of the Commonwealth of Puerto Rico, 823 F.2d at 582 (quoting SEC v. Dresser Indus., Inc., 628 F.2d 1368, 1382 (D.C.Cir.1980) (en banc)); see Lopez v. Dep’t of Justice, 393 F.3d 1345, 1349 (D.C.Cir.2005) (“[a]ll grand jury subpoenas ... fall within FOIA’s third exemption”); but see Lopez, at 1351 (“exemption [3] does not include all preliminary interviews conducted by prosecutors supervising grand jury investigations”).
Defendant applied exemption 3, in conjunction with exemptions 7(C), 7(D) and 7(F), to 885 pages of “documents specifically identified to the grand jury investigation concerning the murder for hire homicide, including ... subpoenas and all records obtained from identified sources in response to said subpoenas ... as well as transcripts of grand jury witness testimonies, and identified grand jury exhibits.” Vaughn index (Doc. # 43). The release of the information would disclose “the scope of the grand jury’s investigation ..., how the Government developed its case, and who the Government relied upon to develop the elements of the alleged crimes.” Boseker Deck ¶ 31. According to the Vaughn index, the withheld documents are not segregable because “[a]ny disclosure from within this material would impermissibly reveal the scope and inner workings of the grand jury investigation.” Defendant properly withheld the grand jury records under exemption 3.
Exemption 5
Exemption 5 provides that “inter-agency or intra-agency memorandums or letters which would not be available by law to a party other than an agency in litigation with the agency” are exempt from disclosure under the FOIA. 5 U.S.C. § 552(b)(5). The exemption is intended to protect the decision-making processes of government agencies and to encourage open discussion of legal and policy issues. Akin, Gump, Strauss, Hauer & Feld, L.L.P. v. U.S. Dep’t of Justice, 503 F.Supp.2d 373, 380 (D.D.C.2007) (citing Leadership Conf. on Civil Rights v. Gonzales, 404 F.Supp.2d 246, 253 (D.D.C.2005)). For a document to be exempt under this provision, its source must be a government agency ... and it must fall within the ambit of documents “ ‘normally privileged in the civil discovery context.’ ” Id. (quoting Leadership Conf., 404 F.Supp.2d at 253 (other citations omitted)). Those privileges include attorney-client privilege, work product, and the deliberative process privilege. Id. (citing Dep’t of Interior v. Klamath Water Users Protective Ass’n, 532 U.S. 1, 8, 121 S.Ct. 1060, 149 L.Ed.2d 87 (2001)). A document containing “facts ‘integral to the legal analyses and discussions of investigation strategy’” qualifies as attorney work product, Martin v. Dep’t of Justice, 488 F.3d 446, 455-56 (D.C.Cir.2007) (quoting Judicial *300Watch, Inc. v. DOJ, 432 F.3d 366, 371 (D.C.Cir.2005)), and a document protected by the work product privilege “is fully protected,” thereby requiring no segregability analysis. Id.
Defendant applied exemption 5, in conjunction with exemptions 6 and 7(C), to a 27-page jury questionnaire summary prepared by an assistant United States attorney for a trial scheduled on August 15, 2005. Vaughn index (Doc. # 33). Boseker states that the document was withheld in full because it constitutes attorney work product inasmuch as it “reflects such matters as trial preparation, trial strategy, interpretations, and personal evaluations and opinions pertinent to [plaintiffs] criminal case specifically in the matter of juror selection.” Boseker Decl. ¶ 34. Boseker also states that “[t]he records were prepared by or at the request or direction of an attorney, and made in anticipation of or during litigation.” Id. Defendant properly withheld the jury questionnaire summary in its entirety as attorney work product.
Exemptions 6 and 7(C)
Defendant withheld third-party identifying information and third-party records under the FOIA’s personal privacy provisions, namely, exemptions 6 and 7(C). Boseker Decl. ¶¶ 36-38, 41, 45 — 46. Exemption 6 protects information about individuals in “personnel and medical files and similar flies the disclosure of which would constitute a clearly unwarranted invasion of personal privacy.” 5 U.S.C. § 552(b)(6). All information that “applies to a particular individual” would qualify for consideration under this exemption. U.S. Dep’t of State v. Washington Post Co., 456 U.S. 595, 602, 102 S.Ct. 1957, 72 L.Ed.2d 358 (1982); accord New York Times Co. v. NASA, 920 F.2d 1002, 1005 (D.C.Cir.1990) (en banc); see Akin, Gump, 503 F.Supp.2d at 381 (“Congress’ primary purpose in drafting Exemption 6 was to provide for confidentiality of personal matters.”) (citation and internal quotation marks omitted). Exemption 7(C) protects from disclosure information compiled for law enforcement purposes to the extent that disclosure “could reasonably be expected to constitute an unwarranted invasion of personal privacy.” 5 U.S.C. § 552(b)(7)(C).
It cannot be reasonably disputed that the requested records concerning plaintiffs criminal prosecution are law enforcement files subject to review under exemption 7. See Blackwell v. FBI, 646 F.3d 37, 40 (D.C.Cir.2011) (finding law enforcement assertion “especially convincing [where] [requester] explicitly sought records related to his own criminal prosecution.”). The focus therefore will be on whether defendant properly withheld information under the “somewhat broader” standard of exemption 7(C). Beck v. Dep’t of Justice, 997 F.2d 1489, 1491 (D.C.Cir.1993) (citation omitted); see Roth v. U.S. Dep’t of Justice, 642 F.3d 1161, 1173 (D.C.Cir.2011) (finding “no need to consider Exemption 6 separately [where] all information that would fall within the scope of Exemption 6 would also be immune from disclosure under Exemption 7(C)”).
“As a result of Exemption 7(C), FOIA ordinarily does not require disclosure of law enforcement documents (or portions thereof) that contain private information.” Blackwell, 646 F.3d at 41 (citing cases). This is because the disclosure of information about an individual’s involvement in law enforcement proceedings constitutes an unwarranted invasion of personal privacy under exemption 7(C). See Fitzgibbon v. CIA, 911 F.2d 755, 767 (D.C.Cir.1990) (quoting Branch v. FBI, 658 F.Supp. 204, 209 (D.D.C.1987)) (“ ‘the mention of an individual’s name in a law enforcement file will engender comment and speculation and carries a stigmatizing *301connotation’ ”); accord Schrecker v. United States Dep’t of Justice, 349 F.3d 657, 661 (D.C.Cir.2003) (citing cases that have “consistently supported nondisclosure of names or other information identifying [third-party] individuals appearing in law enforcement records, including investigators, suspects, witnesses, and informants.”). Thus, third-party identifying information is “categorically exempt” from disclosure under exemption 7(C) in the absence of an overriding public interest in its disclosure. Nation Magazine, Washington Bureau v. United States Customs Service, 71 F.3d 885, 896 (D.C.Cir.1995).
The United States Supreme Court has broadly interpreted the “personal privacy interest that Congress intended Exemption 7(C) to protect.” United States Dep’t of Justice v. Reporters Committee for Freedom of the Press, 489 U.S. 749, 762, 109 S.Ct. 1468, 103 L.Ed.2d 774 (1989); accord Nat’l Archives and Records Admin. v. Favish, 541 U.S. 157, 165, 124 S.Ct. 1570, 158 L.Ed.2d 319 (2004) (“[T]he concept of personal privacy under Exemption 7(C) is not some limited or ‘cramped notion’ ....”) (quoting Reporters Committee, 489 U.S. at 763, 109 S.Ct. 1468). Such privacy interests may be invaded, then, only when a requester shows that the information is necessary to “shed any light on the [unlawful] conduct of any Government agency or official.” Reporters Committee, 489 U.S. at 772-73, 109 S.Ct. 1468; accord Nation Magazine, Washington Bureau, 71 F.3d at 887-88; SafeCard Services, Inc. v. SEC, 926 F.2d 1197, 1206 (D.C.Cir.1991).
Plaintiff “must show that the public interest sought to be advanced is á significant one, an interest more specific than having the information for its own sake” and that “the information is likely to advance that interest.” Favish, 541 U.S. at 172, 124 S.Ct. 1570. Such a showing requires “more than a bare suspicion” of official misconduct; “the requester must produce evidence that would warrant a belief by a reasonable person that the alleged Government impropriety might have occurred.” Id. at 174, 124 S.Ct. 1570. For it is “[o]nly when [such evidence is] produced [that] there [will] exist a counterweight on the FOIA scale for the court to balance against the cognizable privacy interests in the requested records.” Id. at 174-75, 124 S.Ct. 1570. Plaintiff has not argued for disclosure of the withheld material based on an overriding public interest.2 Rather, he argues for disclosure under the public domain doctrine. Pl.’s Opp’n at 14.
Under the public domain doctrine, information otherwise exempt from disclosure “lose[s its] protective cloak once disclosed and preserved in a permanent public record.” Cottone v. Reno, 193 F.3d 550, 554 (D.C.Cir.1999). Plaintiff has the initial burden of “pointing to specific information in the public domain that appears to duplicate that being withheld.” Callaway v. U.S. Dep’t of Treasury, 824 F.Supp.2d. 153, 164 (D.D.C.2011) (quoting Afshar v. Dep’t of State, 702 F.2d 1125, 1130 (D.C.Cir.1983)).
Plaintiff invites a comparison between a police report defendant allegedly released on May 8, 2009, and the same report it allegedly released on June 2, *3022011, containing different redactions. Pl.’s Opp’n at 15. Plaintiff has not identified the specific information he claims defendant withheld that is in the public domain and he overlooks the fact that the second release in June 2011 was of pages additional to — not duplicates of — the earlier released pages. Boseker Deck ¶¶ 22-23. Plaintiff also points to an online newspaper article that he claims contains a statement made by a Reverend Larry Hill that also appears in the foregoing redacted police report. Pl.’s Opp’n at 15 (citing Ex. BB). But the public domain doctrine applies only to information that has been “officially acknowledg[ed].” Wolf v. CIA, 473 F.3d 370, 378 (D.C.Cir.2007). As the D.C. Circuit explained:
an official acknowledgment must meet three criteria: First, the information requested must be as specific as the information previously released. Second, the information requested must match the information previously disclosed.... Third, ... the information requested must already have been made public through an official and documented disclosure ____Thus, the fact that information exists in some form in the public domain does not necessarily mean that official disclosure will not cause harm cognizable under a FOIA exemption.
Id. (citations omitted). Plaintiff makes similar claims about statements supposedly made by Joyce Stone and claims that “[s]he also testified publicly at trial to this information.” Pl.’s Opp’n at 16. However, plaintiff has not provided a transcript of Stone’s testimony, see Callaway, 824 F.Supp.2d at 164, and he has not shown that any statements she may have made to a newspaper reporter were officially acknowledged. Accordingly, plaintiff is not entitled to release of the otherwise exempt information under the public domain doctrine.
Plaintiff also argues that defendant failed to first ascertain the “life status” of the third-party individuals. Pl.’s Opp’n at 16. He claims particularly that “[t]he statements of Michael Wimbush and Jeffrin Nolan should be released because [they] are deceased.... ” Id. Plaintiff has not supplied the proof of their deaths that would be expected but, even if they are deceased, their privacy interests are not per se extinguished. Accuracy in Media, Inc. v. Nat’l Park Serv., 194 F.3d 120, 123 (D.C.Cir.1999) (“[0]ur circuit has squarely rejected the proposition that FOIA’s protection of personal privacy ends upon the death of the individual depicted.”) (examining Campbell v. United States Dep’t of Justice, 164 F.3d 20 (D.C.Cir.1998)). Rather, “[t]he fact of death ... while not requiring the release of information, is a relevant factor to be taken into account in the balancing decision whether to release information.” Schrecker, 349 F.3d at 661 (citations and internal quotation marks omitted). Because plaintiff has not asserted a public interest to trigger the balancing requirement, his so-called life status “argument has no merit.” Piper v. U.S. Dep’t of Justice, 428 F.Supp.2d 1, 3-4 (D.D.C.2006).
Exemption 7(D)
FOIA Exemption 7(D) protects from disclosure records that “could reasonably be expected to disclose the identity of a confidential source.... ” 5 U.S.C. § 552(b)(7)(D). “[I]n the case of a record or information compiled by criminal law enforcement authority in the course of a criminal investigation,” the agency may also withhold “information furnished by a confidential source.” Id. In addition to showing that the information was compiled for a law enforcement purpose, the agency must also show that the informant conveyed the information under either an express or implied promise of confidentiality *303and that disclosure could reasonably be expected to disclose the source’s identity. United States Dep’t of Justice v. Landano, 508 U.S. 165, 171-72, 113 S.Ct. 2014, 124 L.Ed.2d 84 (1993).
An express assurance of confidentiality is shown by an agency’s proffer of “probative evidence that the source did in fact receive an express grant of confidentiality.” Campbell, 164 F.3d at 34 (quoting Davin v. United States Dep’t of Justice, 60 F.3d 1043, 1061 (3d Cir.1995)). Such evidence may take many forms, such as notations on the face of the withheld document, an official’s personal knowledge about the source, a statement from the source, or documents discussing practices or policies for dealing with the source at issue or similarly situated sources. Id. The government is not entitled to a presumption of confidentiality simply because “the source provide[d] information ... in the course of a criminal investigation.” Landano, 508 U.S. at 181, 113 S.Ct. 2014. Thus, when the agency claims an implied assurance of confidentiality, the proper inquiry is “whether the particular source spoke with an understanding that the communication would remain confidential.” Id. at 172, 113 S.Ct. 2014. An implied assurance of confidentiality may be inferred from evidence showing the circumstances surrounding the imparting of the information, including the nature of the criminal investigation and the informant’s relationship to the target. Id.; Computer Professionals for Social Responsibility v. U.S. Secret Service, 72 F.3d 897, 905-06 (D.C.Cir.1996).
Defendant applied exemption 7(D), in conjunction with exemptions 7(C) and 7(F), to portions of statements by “eyewitnesses to either murder, itself, or persons cooperating in providing evidence as to suspects.... ” Vaughn index (Doc. # 35); id. (Doc. # 41). In addition, defendant asserts that “in at least one instance, there is reference to a confidential informant providing information.” Id. (Doc. # 35). Boseker states that where an express assurance of confidentiality is not shown, confidentiality may be “reasonably inferred [because] [t]he witnesses provided both the identities of the conspirators [to a murder for hire plot] and [the] circumstances surrounding the perpetration of the murder.” Boseker Decl. ¶ 52. Defendant has not supplied “probative evidence that [a] source did in fact receive an express grant of confidentiality,” Callaway v. U.S. Dep’t of Treasury, 577 F.Supp.2d 1, 3 (D.D.C.2008) (internal quotation marks and citation omitted), but it has provided sufficient information about the investigation, the criminal activity, and the witnesses’ relationship to the targets to infer an implied grant of confidentiality. See Mays v. Drug Enforcement Admin., 234 F.3d 1324, 1329-31 (D.C.Cir.2000) (discussing “ ‘generic circumstances in which an implied assurance of confidentiality fairly can be inferred’ ”) (quoting Landano, 508 U.S. at 179, 113 S.Ct. 2014). In Mays, there was “no doubt that a source of information about a conspiracy to distribute cocaine typically faces a sufficient threat of retaliation that the information he provides should be treated as implicitly confidential.” Id. at 1331. Surely, the same presumption would apply to a witness to a murder for hire conspiracy. Defendant properly applied exemption 7(D) to Documents 35 and 41 described in the Vaughn index.
Exemption 7(F)
Exemption 7(F) of the FOIA protects from mandatory disclosure information compiled for law enforcement purposes to the extent that disclosure “could reasonably be expected to endanger the life or physical safety of any individual.” 5 *304U.S.C. § 552(b)(7)(F). In general, this exemption has been interpreted to apply to names and identifying information of law enforcement officers, witnesses, confidential informants and other third persons who may be unknown to the requester. See Durham v. United States Dep’t of Justice, 829 F.Supp. 428, 434 (D.D.C.1993); Public Employees for Environmental Responsibility (Peer), Rocky Mountain Chapter v. U.S. E.P.A., 978 F.Supp. 955, 961 (D.Colo.1997) (citing cases). In reviewing claims under exemption 7(F), courts have inquired whether there is some nexus between disclosure and possible harm and whether the deletions were narrowly made to avert the possibility of such harm. Albuquerque Pub. Co. v. U.S. Dep’t of Justice, 726 F.Supp. 851, 858 (D.D.C.1989).
Defendant applied exemption 7(F) in conjunction with exemptions 5, 7(C) and 7(D), to portions of Documents 35 and 41. Boseker Decl. ¶¶ 55-56. As with the previous findings, defendant’s application of this exemption based on a reasonable fear for the safety of “[e]ertain individuals, confidential informants, and witnesses” connected to the murder for hire plot was proper. See Adionser v. Dep’t of Justice, 811 F.Supp.2d 284, 301 (D.D.C.2011) (“DEA properly applied Exemption 7(F) to protect the physical safety of special agents, law enforcement officers, government employees, and confidential sources of information ....”) (citations omitted).
Plaintiff challenges defendant’s “ ‘large swaths’ ” of redactions made to a number of released documents under exemptions 7(C), 7(D), and 7(F). Pi’s. Opp’n at 13, 17, 19. But he overlooks the fact that in such instances, defendant applied those exemptions in tandem and that exemption 7(D) in particular permits withholding not only third-party identifying information of confidential sources but also, under the circumstances of this case, the information they supplied. In addition, plaintiff overlooks Boseker’s explanation that “[w]here a record was identified to a third party individual’s relationship to the subject murder, ... it was indexed and exemptions applied.” Boseker Decl. ¶ 24 n. 2. Because, as is stated above, “FOIA ordinarily does not require disclosure of law enforcement documents (or portions thereof) that contain private information,” Blackwell, 646 F.3d at 41, no genuine dispute is shown merely because a released record was heavily redacted. Plaintiff suggests that the documents be reviewed in camera. Because defendant’s Vaughn index and plaintiffs own exhibits of the challenged records allow for meaningful de novo review of the claimed exemptions, an in camera review is not warranted. See Graham v. Mukasey, 247 F.R.D. 205, 207 (D.D.C.2008) (citing Weissman v. Central Intelligence Agency, 565 F.2d 692, 698 (D.C.Cir.1977)) (stating, in a FOIA case, that “only where the record is vague or the agency claims too sweeping or suggestive of bad faith” that an in camera examination is warranted.)
3. Record Segregability
An agency must disclose “[a]ny reasonably segregable portion” of an otherwise exempt record. 5 U.S.C. § 552(b). While an agency is presumed to have complied with its obligation to disclose nonexempt portions of the record, a “district court must make specific findings of segregability regarding the documents to be withheld.” Sussman v. U.S. Marshals Serv., 494 F.3d 1106, 1116 (D.C.Cir.2007). When, as here, records are withheld in their entirety, a determination must be made as to whether any portion of those records could have been segregated and released. Trans-Pacific Policing Agreement v. United States Customs Service, *305177 F.3d 1022, 1027-28 (D.C.Cir.1999). To justify the withholding of entire records, an agency must demonstrate that the “exempt and nonexempt information are ‘inextricably intertwined,’ such that the excision of exempt information would impose significant costs on the agency and produce an edited document with little informational value.” Mays, 234 F.3d at 1327 (quoting Neufeld v. IRS, 646 F.2d 661, 666 (D.C.Cir.1981)) (other citation and internal quotation marks omitted).
Boseker states that “each document was evaluated to determine if any information could be segregated and released” and that the documents “withheld in their entirety contained no meaningful [releasable] portions.... ” Boseker Decl. ¶ 57. The Vaughn index supports Boseker’s statement, as does the case law with respect to the complete withholding of the grand jury records, attorney work product, and third-party records. Defendant has demonstrated that it disclosed all reasonably segregable records that are currently at issue.
4.Record Referrals
Plaintiff takes issue with EOU-SA’s referral of certain records to the Marshals Service and BOP for review and a response directly to plaintiff. See Pl.’s Opp’n at 20-22. Because EOUSA is ultimately responsible for processing responsive records in its custody and control at the time of the FOIA request, a referral of records could constitute an improper withholding if the “net effect [of the referral procedure] is significantly to impair the requester’s ability to obtain the records or significantly to increase the amount of time he must wait to obtain them.” Peralta v. U.S. Attorney’s Office, 136 F.3d 169, 175 (D.C.Cir.1998) (quoting McGehee v. CIA, 697 F.2d 1095, 1110 (D.C.Cir.1983)) (internal quotation marks omitted) (brackets in original).
As background information, Boseker refers to an OIP letter advising plaintiff that some of the records referred to BOP were returned to EOUSA but Boseker does not otherwise address the referrals. Therefore, defendant’s motion for summary judgment with regard to the referred records will be denied.
5. Unprocessed Records
Defendant seems to question whether it interpreted plaintiffs revised request too narrowly as seeking only that information that directly relates to “the homicide of Tyree Nathaniel Wimbush.” Boseker Decl. ¶ 22 n. 1. It then invites plaintiff to indicate whether he “believes that [seemingly related] material is, in fact, within the scope of his request” and if so, defendant “would ask leave of the court to process the materials in accords [sic] with the FOIA.” Id. Plaintiff responds that he “was seeking [such] records and would still like to receive [them].” Pl.’s Opp’n at 7. Therefore, defendant will be granted leave to process the additional records.3
6. Agency Bad Faith
Plaintiff argues throughout his opposition that defendant has acted in bad faith, but he does not make clear in what material way the defendant acted in bad faith. See Pl.’s Opp’n at 4-7; 26-31. To *306sustain this claim, plaintiff “must point to evidence sufficient to put the Agency’s [presumption of] good faith into doubt.” Ground Saucer Watch, Inc. v. C.I.A., 692 F.2d 770, 771 (D.C.Cir.1981). “Purely speculative claims” of bad faith will not suffice to overcome the presumption. Id.
To the extent that plaintiffs bad faith argument is based on defendant’s search for what it determined to be records responsive to plaintiffs narrowed request, see e.g., Pl.’s Opp’n at 4-5, defendant reasonably interpreted the narrowed request for “[a]ny and all (statements and investigative) information pertaining to me from January 1st of 1999 up until the present” as excluding “documents connected to what appears to be a narcotics-related incident and laboratory reports arising from that incident, which does not appear to connect with the homicide.” Boseker Decl. n. 1.
To the extent that plaintiffs argument is based on defendant’s initial handling of his request, see, e.g., PL’s Opp’n at 5-7, “initial delays in responding to a FOIA request are rarely, if ever, grounds for discrediting later affidavits by the agency.” Iturralde v. Comptroller of Currency, 315 F.3d 311, 315 (D.C.Cir.2003) (citations omitted); see Perry, 684 F.2d at 125 (“[H]owever fitful or delayed the release of information under the FOIA may be, once all requested records are surrendered, federal courts have no further statutory function to perform.”); accord Boyd v. Criminal Div. of U.S. Dept. of Justice, 475 F.3d 381, 388 (D.C.Cir.2007) (“[B]ecause the report was located in the work file and subsequently disclosed, the issue is moot for purposes of this FOIA action.”) (citing Perry); see also Ground Saucer, 692 F.2d at 772 (“[T]he institution of a de novo search significantly undercuts appellant’s argument that earlier noncooperation by the CIA raises a substantial question of current bad faith on the part of the Agency. Indeed, if the release of previously withheld materials were held to constitute evidence of present ‘bad faith,’ similar evidence would exist in every FOIA case involving additional releases of documents after the filing of suit.”) (citation omitted).
Finally, to the extent that plaintiffs argument is based on his disagreement with defendant’s claimed exemptions and his unsubstantiated suggestions that defendant has doctored its proffered exhibits, see, e.g., Pl’s Opp’n at 5-9, he has failed to offer any evidence to rebut the “presumption of good faith” accorded agency declarations. Long v. U.S. Dep’t of Justice, 450 F.Supp.2d 42, 54 (D.D.C.2006) (citation and quotation omitted). In sum, plaintiff has failed to demonstrate that defendant has in any way acted in bad faith.
7. The Privacy Act Exemption
Plaintiff argues that defendant “improperly invoked” exemption (j)(2) of the Privacy Act.4 Pl’s Opp’n at 8-9. Given that subsection (j)(2) explicitly authorizes law enforcement agencies to exempt from mandatory disclosure record systems pertaining to, inter alia, “the activities of prosecutors,” 5 U.S.C. § 552a(j)(2), plaintiff is simply wrong. See 28 C.F.R. § 16.81(a) (exempting the United States Attorney’s Criminal Case Files). In any event, the Privacy Act does not bar disclosure of documents that are otherwise re*307quired to be disclosed under the FOIA, 5 U.S.C. § 552a(b)(2); see Greentree v. United States Customs Serv., 674 F.2d 74, 79 (D.C.Cir.1982), and defendant properly reviewed and released responsive records under the FOIA.
CONCLUSION AND ORDER
For the foregoing reasons, defendant’s motion for summary judgment will be granted as to its claimed exemptions and the segregability of the processed records, and will be denied in all other respects without prejudice. Accordingly, it is hereby
ORDERED that defendant’s motion for summary judgment [Dkt. # 16] is GRANTED in part and DENIED in part without prejudice; it is further
ORDERED that by March 22, 2013, defendant shall (1) process the remaining responsive records and release any nonexempt records to plaintiff, and (2) file a properly supported summary judgment motion that addresses those records, the referred records, and the actual search for responsive records; it is further
ORDERED that plaintiffs motion for counsel [Dkt. # 22], motion for an in camera inspection [Dkt. # 23], and motion for a writ of mandamus [Dkt. # 28] are DENIED.