COLE, Circuit Judge. Cynthia Hurst sued Caliber Home Loans for procedural violations related to her loan-modification application. After both parties filed motions for summary judgment, the district court granted summary judgment in favor of Caliber. Hurst appeals the district court’s ruling as to her dual-tracking claim, her reasonable diligence claim, and her adequate notice claim. We conclude that the district court erred with respect to the reasonable diligence claim only, so we affirm in part and vacate in part the district court’s decision.

RONALD LEE GILMAN, Circuit Judge. Seth Michael Zakora died from an overdose of fentanyl in his prison cell at the Lakeland Correctional Facility (Lakeland) in Michigan. His mother, Brandy Zakora, as the personal representative of his estate, brought this lawsuit against a number of employees and officials with the Michigan Department of Corrections (MDOC) and the Michigan State Police (MSP), asserting multiple claims under 42 U.S.C. § 1983.

The claims in essence allege that the defendants are responsible for Zakora’s death because (1) they failed to protect him from the allegedly rampant problem of drug smuggling at Lakeland, and (2) they failed to promptly investigate two other incidents of drug overdoses in Zakora’s small unit that occurred within two days of his own death. Zakora’s estate (the Estate) also alleges that two corrections officers were deliberately indifferent to Zakora’s serious medical needs by not heeding verbal warnings from other inmates about Zakora’s dire health status immediately before he died.

The district court granted the defendants’ motions to dismiss or, in the alternative, for summary judgment. For the reasons set forth below, we AFFIRM in part, REVERSE in part, and REMAND the case to the district court for further proceedings consistent with this opinion.

CLAY, Circuit Judge. In this civil rights action under 42 U.S.C. § 1983, Defendants Officer Jeremy Powers and the City of Adrian appeal the district court’s denial of their motion for summary judgment on qualified immunity, state law immunity, and municipal liability grounds. We hold that neither qualified nor state law immunity shields Officer Powers from liability. Consequently, we lack appellate jurisdiction to review the municipal liability claim against Defendant City of Adrian. The district court’s denial of summary judgment to Defendant Powers is AFFIRMED, and Defendant City of Adrian’s municipal liability appeal is DISMISSED for lack of appellate jurisdiction.

HELENE N. WHITE, Circuit Judge. Defendant Timmy Fields appeals his twenty-five-year mandatory-minimum sentence enhancement imposed for his having committed two prior “serious drug felon[ies].” Fields challenges the procedure used to impose his enhancement and argues as well that neither prior conviction was for a “serious drug felony.” Most of Field’s challenges lack merit, but we agree that one of the predicate prior convictions was not for a “serious drug felony.” Accordingly, we VACATE Fields’s sentence and REMAND for resentencing.