Brandon Scott Lavergne, Louisiana prisoner # 424229, pleaded guilty to two counts of first degree murder for the murders of Michaela Shunick and Lisa Pate. Thereafter, Lavergne filed a civil rights complaint against Sergeant Steven Bajat and the Lafayette City Police Department. The district court dismissed Lavergne’s complaint as barred by Heck v. Humphrey, 512 U.S. 477, 114 S.Ct. 2364, 129 L.Ed.2d 383 (1994), and alternatively, dismissed Lavergne’s claims against the Lafayette City Police Department for failure to state a claim because the Police Department is not an entity capable of being sued under . 42 U.S.C. § 1983. The district *271 court also dismissed Lavergne’s state law claims without prejudice.

This court reviews the dismissal of a complaint for failure to state a claim under 28 U.S.C. § 1915(e)(2)(B) de novo, applying the same standard that is used to review a dismissal under Federal Rule of Civil Procedure 12(b)(6). Black v. Warren, 134 F.3d 732, 733-34 (5th Cir. 1998) (per curiam).

On appeal, Lavergne contends that his claims are not barred by Heck because his complaint does not call into question his guilty plea convictions to the murders of Shunick and Pate, as the evidence and events underlying his complaint were not used to form the basis of his guilty plea convictions for the murders. We disagree. Lavergne’s claims arise out of the Shunick and Pate murder prosecutions and guilty plea convictions, and they reflect Lav-ergne’s view that the prosecutions and his resulting guilty pleas were tainted. If the district court were to grant Lavergne relief as to any of these claims, it would implicitly call into question the validity of his convictions. See Heck, 512 U.S. at 487, 114 S.Ct. 2364; Penley v. Collin Cnty., Tex., 446 F.3d 572, 573 (5th Cir. 2006) (per curiam); see also Lavergne v. Sanford, 570 Fed.Appx. 385 (5th Cir. 2014) (per curiam). In this same vein, the district court did not abuse its discretion in denying his motion to appoint counsel or his motions to amend his complaint because the amendments were futile. See Heck, 512 U.S. at 487, 114 S.Ct. 2364; Leal v. McHugh, 731 F.3d 405, 417 (5th Cir. 2013); Clarke v. Stalder, 154 F.3d 186, 189-90 (5th Cir. 1998) (en banc); Ulmer v. Chancellor, 691 F.2d 209, 212-13 (5th Cir. 1982). To the extent Lavergne raises new claims on appeal, we do not address them. See Williams v. Ballard, 466 F.3d 330, 335 (5th Cir. 2006) (per cu-riam).

Lavergne’s motion to appoint counsel is DENIED, and the judgment of the district court is AFFIRMED.