Details of Mac Miller‘s cause of death have surfaced — the hip hop star died from a lethal mix of fentanyl and cocaine.

The LA County Coroner’s Office describes a “mixed drug toxicity” in the official toxicology documents. Specifically, fentanyl, coke and alcohol were found in his system. It wasn’t necessarily the amount of a certain drug over another that killed him, but the combination.

The report, relayed by TMZ, reveals it was Mac’s assistant who found him unresponsive and called emergency services. Mac was described as being “blue,” even during the call for help. First responders arrived to find a patient suffering from cardiac arrest. Pills reportedly recovered from the home included Xanax, Oxycodone, Hydrocodone, and generic Adderall.

His death has been categorized by the Coroner as an “accidental overdose.”

Mac struggled with substance abuse for years before his death. He passed away on September 7, 2018 at age 26.