Leland Humbert seeks to appeal the district court’s order denying relief on his petition filed under 28 U.S.C. § 2254 (2000). An appeal may not be taken from the final order in a habeas corpus proceeding in which the detention complained of arises out of process issued by a state court unless a circuit justice or judge is *889 sues a certifícate of appealability. 28 U.S.C. § 2253(c)(1) (2000). A certificate of appealability will not issue for claims addressed by a district court on the merits absent “a substantial showing of the denial of a constitutional right.” 28 U.S.C. § 2253(c)(2) (2000). As to claims dismissed by a district court solely on procedural grounds, a certificate of appealability will not issue unless the petitioner can demonstrate both “(1) ‘that jurists of reason would find it debatable whether the petition states a valid claim of the denial of a constitutional right’ and (2) ‘that jurists of reason would find it debatable whether the district court was correct in its procedural ruling.’ ” Rose v. Lee, 252 F.3d 676, 684 (4th Cir. 2001) (quoting Slack v. McDaniel, 529 U.S. 473, 484, 120 S.Ct. 1595, 146 L.Ed.2d 542 (2000)). We have independently reviewed the record and conclude that Humbert has not satisfied either standard. See Miller-El v. Cockrell, 537 U.S. 322, 336, 123 S.Ct. 1029, 154 L.Ed.2d 931 (2003). Accordingly, we deny a certificate of appealability and dismiss the appeal. See 28 U.S.C. § 2253(c) (2000). Humbert raises additional issues in his informal brief. However, because these claims were not previously raised in the district court, we decline to consider such claims on appeal. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.

DISMISSED