MEMORANDUM

Duke Monroe Richardson, Jr., appeals pro se from the district court’s judgment in his 42 U.S.C. § 1983 action alleging constitutional violations in connection with prison disciplinary proceedings. We have jurisdiction under 28 U.S.C. § 1291 . We review de novo. Watison v. Carter, 668 F.3d 1108, 1112 (9th Cir.2012) (dismissal under 28 U.S.C. § 1915 (e)(2)(B)(ii)); Hamilton v. Brown, 630 F.3d 889, 892 (9th Cir.2011) (dismissal under 28 U.S.C. § 1915A). We vacate in part and remand.

On appeal, Richardson challenges only the dismissal of his Fourteenth Amendment due process claim as Wec/c-barred. It appears that Richardson’s claim includes a challenge to an unconstitutional procedure — namely, the denial of an investigator — and is based in part on an alleged failure to issue Rules Violation Reports to other inmates involved in the incident underlying Richardson’s disciplinary proceedings and, therefore, is not Heck- barred. See Nonnette v. Small, 316 F.3d 872 , 875 n. 3 (9th Cir.2002) (“A prisoner who seeks damages only for being subjected to unconstitutional procedures, without implying the invalidity of (or seeking damages for) the resulting loss of good-time credits, may proceed under § 1983 without first invalidating his disciplinary proceeding.”); see also Muhammad v. Close, 540 U.S. 749, 751 , 124 S.Ct. 1303 , 158 L.Ed.2d 32 (2004) (per curiam) (“Heck’s requirement to resort to state litigation and federal habeas before § 1983 is not ... implicated by a prisoner’s challenge that threatens no consequence for his conviction or the duration of his sentence.”). As to the remainder of Richardson’s claim, the district court correctly held that it was Wec/c-barred, but it appears that Richardson has since been released from custody, and Heck might no longer apply. See Nonnette, 316 F.3d at 875-77 (a § 1983 action for damages can be maintained, even though success in that action would imply the invalidity of the disciplinary proceedings that caused revocation of a prisoner’s good-time credits, where, after the district court had dismissed the action under Heck, the prisoner was released from incarceration and on parole). We therefore vacate the dismissal of Richardson’s due process claim only and remand so that the district court may review in the first instance the matters raised herein.

VACATED in part and REMANDED.

This disposition is not appropriate for publication and is not precedent except as provided by 9 th Cir. R. 36-3.