Michael K. Williams causes of death have been established, Fox News confirms.

The NYC Office of Chief Medical Examiner stated to Fox News that the actor was intoxicated by the combination effects of heroin, fentanyl and p-fluorofentanyl. The manner in which he died was determined to be accidental.

“The Wire’s” star was found dead in his Brooklyn apartment on September 6 . He was 54 years old.

Williams was a ubiquitous character actor in other shows and films for more than two decades, creating another classic character as Chalky White in HBO’s “Boardwalk Empire” from 2010 to 2014, and appearing in the films “12 Years a Slave” and “Assassin’s Creed.”

HOLLYWOOD REACTS TO DEATH OF MICHAEL K. WILLIAMS: ‘AN AMAZING ACTOR AND SOUL’

He also appeared in “The Night Of” and “Lovecraft Country” for which he was nominated for an Emmy Award.

Michael K. Williams died from an accidental drug overdose, according to the NYC Chief Medical Examiner. 

Michael K. Williams died from an accidental drug overdose, according to the NYC Chief Medical Examiner. (REUTERS/Ringo Chiu)

Williams was born in 1966 in Brooklyn, the son of a mother from Nassau, Bahamas, and a father from South Carolina. His family raised him in East Flatbush’s Vanderveer Projects. He attended George Westinghouse Career and Technical Education High School.

MICHAEL K. WILLIAMS’ SPOKE PUBLICLY ABOUT HIS ADDICTION, MENTAL HEALTH STRUGGLES

His first forays into entertainment were as a dancer for artists including Missy Elliot, Ginuwine, Crystal Waters and Technotronic.

“I was angry and I had a lot of energy,” he told The Associated Press in 2018. It was such a great outlet. Although I wasn’t the greatest dancer I know, I had the highest passion. This energy was always there. It didn’t matter if I was with other men or not, you could always feel me. “

Williams had been working with a New Jersey charity to smooth the journey for former prison inmates seeking to reenter society, and was working on a documentary on the subject.

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He spoke in an Associated Press story in 2020 of his rough time growing up, and said he had struggled with drug addiction, which he had spoken frankly about in interviews in recent years.

” “This Hollywood thing you see in me, I’m just passing through.” he stated. Because I feel this is my passion and my purpose, it is my calling. “

If you or someone you know is struggling with mental health or drug addiction, please contact the Substance Abuse and Mental Health Services Administration at 1-800-662-HELP (4357).

The Associated Press contributed to this report.