Matthew Perry died from the "acute effects of ketamine," according to an autopsy report released by the Los Angeles County medical examiner more than a month after the Friends actor died.
The 54-year-old was found unresponsive after he drowned in his pool at his Los Angeles home on October 28, the examiner said on Friday.
His drowning, coronary artery disease and the effects of buprenorphine — a medication used to treat opioid use disorder — were noted as factors that contributed to his death, but were not the primary cause, according to the autopsy results. The death was ruled an accident.