AdvertisementSKIP ADVERTISEMENTYou have a preview view of this article while we are checking your access. When we have confirmed access, the full article content will load.Kenneth Iwamasa injected Mr. Perry with the ketamine that killed him. He is the last of five defendants to be sentenced in the case.Listen · 6:22 min The actor Matthew Perry was found unresponsive in a hot tub at his home in Los Angeles on Oct. 28, 2023. His assistant had injected him with at least three shots of ketamine that day.Credit...Willy Sanjuan/Invision, via Associated PressMay 27, 2026Updated 3:17 p.m. ETThe personal assistant to the actor Matthew Perry who injected him with the ketamine that killed him was sentenced Wednesday to 41 months in prison.The assistant, Kenneth Iwamasa, pleaded guilty in 2024 to one count of conspiracy to distribute ketamine causing death. His sentence included two years of supervised release, a $10,000 fine and a mandatory special assessment of $100.Mr. Iwamasa is the last of the five people charged in connection with Mr. Perry’s death to be sentenced, seemingly bringing a yearslong legal saga to a close.Mr. Perry, who starred in the 1990s sitcom “Friends,” became increasingly reliant on ketamine before his death on Oct. 28, 2023. Mr. Iwamasa has admitted that in the days beforehand, he injected the actor with at least 27 shots of ketamine, including at least three on the day that he died.Prosecutors say that Mr. Iwamasa spent tens of thousands of dollars on dozens of vials of ketamine for Mr. Perry over a span of a few weeks.According to the Los Angeles County medical examiner’s office, Mr. Perry’s death was caused by the “acute effects” of ketamine. The office added that drowning, coronary artery disease and the effects of an opioid, buprenorphine, had contributed. Mr. Perry was found floating face down in a hot tub at his home in Los Angeles.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe.AdvertisementSKIP ADVERTISEMENT