Kenneth Iwamasa, the former personal assistant of actor Matthew Perry, was sentenced to 41 months in prison by Judge Sherilyn Garnett at a Los Angeles court on November 12. The sentence concludes the prosecution of five individuals connected to the death of the 'Friends' star from a ketamine overdose.
Under a plea agreement, Iwamasa admitted to injecting Perry with ketamine at the actor's request on October 28, 2023, before leaving to run errands. Upon returning, he found Perry, 54, floating in a hot tub at his home in the Pacific Palisades neighborhood of Los Angeles.
“I am deeply sorry to all of you,” Iwamasa said in court. “I truly regret the illegal actions I will forever be sorry for. I will carry this to my grave.”
Prosecutors accused Iwamasa of being Perry's “enabler and supplier” of drugs, continuing to inject him despite alarming incidents. According to court documents, Iwamasa administered more than 25 injections of ketamine to Perry in the days before his death, including three on the day he died. The court filings show that the 'Friends' star asked Iwamasa to “shoot me up with a big one” in his final moments.
An autopsy report concluded that Perry died from “acute effects of ketamine.” Perry's stepfather, Keith Morrison, addressed the court on November 12, condemning Iwamasa's actions: “You kept injecting him more. You could have called someone.”
In addition to Iwamasa, prosecutors have secured convictions against four others involved in Perry's overdose death. Certified drug counselor Erik Fleming was sentenced to two years in prison earlier this month for acting as a middleman to supply Perry with narcotics. Two doctors accused of profiting from Perry's addiction, Mark Chavez and Salvador Plasencia, were also sentenced in December 2025. Chavez received eight months of home confinement after pleading guilty to conspiracy to distribute ketamine. Plasencia—who once said of Perry, “I wonder how much this moron will pay”—was sentenced to 2.5 years in federal prison.
A dual British-American woman named Jasveen Sangha, who sold drugs to wealthy clients from a Los Angeles apartment, received a 15-year prison sentence last month.
