Michael Kenneth Williams, a cast member in the HBO series “The Night Of,” poses for a portrait during the 2016 Television Critics Association Summer Press Tour at the Beverly Hilton on Saturday, July 30, 2016, in Beverly Hills, Calif. (Photo by Chris Pizzello/Invision/AP)

Actor Michael K. Williams died of an accidental drug overdose, the New York City medical examiner’s office announced.

The 54-year-old star of  “The Wire” — who was an Emmy nominee this year for his work on “Lovecraft Country” — died of acute intoxication from a lethal mix of fentanyl, p-fluorofentanyl, heroin and cocaine, the New York City Office of Chief Medical Examiner confirmed in a statement to media outlets Friday.

The death was ruled accidental. The medical examiner declined to comment further. Williams, 54, was found dead in his Brooklyn penthouse on Sept. 6.  A five-time Emmy nominee. Williams also appeared on HBO’s “Boardwalk Empire,” had been open in recent years about his struggles with drug

He was nominated for an Emmy this year in the Outstanding Supporting Actor in a Drama Series category for his work in “Lovecraft Country,” but the award went to Tobias Menzies in “The Crown.”

Williams was the brother of Compton City Councilwoman Michelle Chambers.

She released a statement on Tuesday saying, “Our family has been shaken to the core (at) the loss of our Mike … I will miss my brother, but I  know he will continue to watch over me and our family in heaven as he did on earth.”