Michael Grider, a Florida pre-trial detainee proceeding pro se and in forma *546pauperis, appeals the district court’s sua sponte dismissal of his 42 U.S.C. § 1983 civil rights complaint against Phyllis Cook and Syed Muhammed Faisal Azfal, individually and in their official capacities as Bro-ward County assistant public defenders, the Broward County Sheriffs Office, and Broward County. At the time Grider filed the complaint, he had been arrested and was being detained on arson charges. The district court dismissed Grider’s complaint with prejudice under 28 U.S.C. § 1915(e)(2)(B)(ii) for failure to state a claim.
In his complaint, Grider asserted as follows. Since before the time of his arrest, he has been subjected to an unlawful psychiatric program that was imposed upon him without notice, a hearing, or an opportunity to object. His public defender, Cook, obtained an order declaring Grider incompetent to stand trial without Grider’s consent and with full knowledge that Gri-der was not mentally ill. Grider’s public defender in the mental health court, Azfal, ignored Grider’s demands to file a motion for reconsideration of the state trial court’s incompetency ruling. While in the custody of Broward County Sheriffs Office as part of the psychiatric program, Grider has suffered numerous due process violations. Grider alleges that the actions of Cook and Azfal, the Broward County Sheriffs Office, and Broward County were part of an established custom or policy and were the result of a conspiracy against Grider for the purpose of humiliating and embarrassing him. He sought a writ of habeas corpus, in addition to monetary, injunctive, and declaratory relief.
On appeal, Grider argues that the district court erred in dismissing his complaint for failure to state a claim because the district court did not take the allegations in his complaint as true and relied on information outside of the complaint, specifically his state criminal proceedings. He also argues that even if dismissal was appropriate, he should have been given the opportunity to amend.
I. Failure to State a Claim
We review de novo a district court’s sua sponte dismissal for failure to state a claim under 28 U.S.C. § 1915(e)(2)(B)(ii), and view the allegations in the complaint as true.1 Hughes v. Lott, 350 F.3d 1157, 1159-60 (11th Cir.2003). The facts as pleaded must state a claim for relief that is “plausible on its face,” Ashcroft v. Iqbal, 556 U.S. 662, 678, 129 S.Ct. 1937, 173 L.Ed.2d 868 (2009), and the “plaintiffs obligation to provide the ‘grounds’ of his ‘entitlement to relief requires more than labels and conclusions, and a formulaic recitation of the elements of the cause of action will not do.” Bell Atlantic Corp. v. Twombly, 550 U.S. 544, 555, 127 S.Ct. 1955, 167 L.Ed.2d 929, (2007) (brackets omitted).2
*547Viewing the allegations in Gri-der’s complaint as true, the district court properly dismissed his complaint for failure to state a claim. As to Grider’s requested relief seeking a writ of habeas corpus and his immediate release, this relief is not cognizable under § 1983. See Bradley v. Pryor, 305 F.3d 1287, 1289 (11th Cir.2002) (“[H]abeas corpus [rather than § 1983] is the exclusive remedy for a state prisoner who challenges the fact or duration of his confinement and seeks immediate or speedier release).” (citing Preiser v. Rodriguez, 411 U.S. 475, 93 S.Ct. 1827, 36 L.Ed.2d 439 (1973)). The district court also found Grider’s claims for monetary damages stemming from his confinement barred by Heck v. Humphrey, 512 U.S. 477, 487, 114 S.Ct. 2364, 129 L.Ed.2d 383 (1994), which held that an action for damages under § 1983 is not cognizable if a judgment in the plaintiffs favor on that action “would necessarily imply the invalidity of his conviction or sentence,” and the conviction or sentence has not been reversed, expunged, or invalidated. This holding was in error because even if the Heck bar applies to pretrial detainees, a proposition drawn into question by the Supreme Court in Wallace v. Kato, 549 U.S. 384, 393, 127 S.Ct. 1091, 166 L.Ed.2d 973 (2007), the principles of Heck are not applicable to Grider’s claims. That is because his claims, as stated in his complaint, turn on his conditions of confinement, incompetency status, and being subjected to a psychiatric program before his arrest for arson, and any potential judgment for money damages related to those claims would not “necessarily imply the invalidity of his [potential future] conviction or sentence.” Heck, 512 U.S. at 487, 114 S.Ct. 2364. However, for the reasons discussed below, Grider failed to adequately allege facts that would support his claims for damages and his claims were therefore properly dismissed.
With respect to Grider’s claims against Cook and Azfal, Grider’s public defenders in his criminal proceeding, the Supreme Court has held that public defenders do not act under color of state law when “performing a lawyer’s traditional functions as counsel to a defendant in a criminal proceeding,” and thus, they are not liable under 42 U.S.C. § 1983 for such actions. Polk County v. Dodson, 454 U.S. 312, 318, 325, 102 S.Ct. 445, 70 L.Ed.2d 509 (1981). Consequently Cook and Azfal may not be sued under § 1983 for their actions taken in connection with representing Grider before the state trial and mental health courts. Although Grider attempted to bring Cook and Azfal within the realm of § 1983 by alleging that they conspired with the Broward County Sheriffs Office and Broward County to intentionally embarrass and harass him, see Wahl v. McIver, 773 F.2d 1169, 1173 (11th Cir.1985) (noting that “an attorney may be sued under section 1983 if he conspired with someone who did act under color of state law”), Grider provided nothing more than a “general conclusory allegation of conspiracy” which will not support such a claim. Id. at 1173.
As to Grider’s claims against the Broward County Sheriffs Office and Bro-ward County, Grider stated nothing more than conclusory allegations of constitutional violations. Twombly, 550 U.S. at 555, 127 S.Ct. 1955. Grider provided a formulaic recitation of a claim under Monell v. Department of Social Services3 by stating *548that “defendants’ conduct was the product of an official policy or unofficial custom,” but he did not provide any specific facts about any policy or custom that resulted in his alleged constitutional deprivation. Twombly, 550 U.S. at 555, 127 S.Ct. 1955. Accordingly, we affirm the district court’s dismissal of Grider’s complaint for failure to state a claim.
II. Dismissal with Prejudice
We have held that “[wjhere a more carefully drafted complaint might state a claim, a plaintiff must be given at least one chance to amend the complaint before the district court dismisses the action with prejudice.” Bank v. Pitt, 928 F.2d 1108, 1112 (11th Cir.1991), overruled in part by Wagner v. Daewoo Heavy Indus. Am. Corp., 314 F.3d 541, 542 & n. 1 (11th Cir.2002) (holding that a district court is not required to sua sponte grant leave to amend to counseled plaintiffs who never requested leave to amend, but noting that this holding does not disturb a pro se litigant’s right to amend). Although a pro se litigant must generally be permitted to amend his complaint, a district court need not allow amendment where amendment would be futile, or in other words, still subject to dismissal. Cockrell v. Sparks, 510 F.3d 1307, 1310 (11th Cir.2007).
As discussed above, Grider’s requests for a writ of habeas corpus and immediate release are not cognizable under § 1983. However, with respect to his § 1983 damages claims, those claims failed because Grider did not support his conclu-sory allegations with sufficient facts. Because it is not clear that these claims would otherwise be subject to dismissal, the district court erred in dismissing these claims with prejudice because as a pro se litigant Grider should have been given at least one opportunity to amend. Bank, 928 F.2d at 1112. In an amended complaint, Grider could submit additional facts to support his eonclusory allegations of a conspiracy or a county “pattern” or “practice” that led to the violation of his constitutional rights. Although it is possible that there are additional facts that would preclude his claims or that he would be unable to marshal sufficient facts to plausibly state a claim, it is not apparent from the face of his complaint that he should not be entitled to at least one opportunity to amend. Should Grider properly state a claim on remand, the district court can consider whether any immunities or abstention would apply to the otherwise properly stated complaint. Therefore, we vacate and remand to the district court to provide Grider the opportunity to amend his complaint.
AFFIRMED IN PART, VACATED AND REMANDED IN PART.