Matthew Perry was declared dead after being found unresponsive at his home on October 28. -AP
Friends star Matthew Perry died accidentally from the acute effects of the anaesthetic ketamine, according to the results of an autopsy on the 54-year-old Friends actor.
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The Los Angeles County Department of Medical Examiner said in the report released on Friday that Perry also drowned in his jacuzzi, but that it was a secondary factor in his October 28 death, which was deemed an accident.
The report says coronary artery disease and buprenorphine, which is used to treat opioid use disorder, also contributed.
Perry, who played Chandler Bing in the hit US sitcom Friends, was declared dead after being found unresponsive at his home in the Pacific Palisades area of Los Angeles.
Investigators performed an autopsy the following day.
During his life, Perry was open about his battle with substance abuse and addiction - and also set up a sober living facility for men with similar issues.
Following his death, a foundation was set up in his name to help those struggling with addiction.