The ‘Club Kid’ killer Michael Alig died from “acute intoxication” from a cocktail of drugs the Office of Chief Medical Examiner ruled Monday. His autopsy found  fentanyl, acetylfentanyl, heroin and methamphetamine in his system.

Alig was found dead in his Washington Heights, New York apartment on Christmas Eve. He ex-boyfriend told investigators that he had been doing drugs and heroin was found inside his apartment, leading investigators to believe he died of an overdose.

Alig was a notable NYC club promoter in the ’80s and ’90s. He was the star of a group of partiers called “club kids.” In 1997, Alig pled guilty to murdering his drug dealer, Andre (Angel) Melendez, and was sentenced to 17 years in prison.

WATCH: Peter Gatien On Michael Alig uInterview

Alig and Melendez got into a fight and Robert “Freeze” Riggs bashed Melendez over the head. Alig and Riggs cut the body up and threw it into the Hudson River. Alig fled the city during the investigation.

He returned though, and started back on the club promoting scene. Alig and Riggs pleaded guilty manslaughter in 1997 and were each sentenced to 10 to 20 years behind bars. He was released from prison in 2014.

This saga was documented in the films Glory Daze: The Life and Times of Michael Alig and the 2003 movie Party Monster starring Macaulay Culkin as Alig.

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