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Matthew Perry's assistant sentenced to 41 months for role in the actor's death

Prosecutors said he injected Perry with ketamine multiple times and helped conceal evidence after the actor’s overdose death.

  • In a Los Angeles courtroom on Wednesday, Matthew Perry's live-in personal assistant Kenneth Iwamasa was sentenced to 41 months in prison, concluding a multi-year legal case surrounding the actor's death.
  • Prosecutors alleged that Iwamasa, lacking medical training, injected Perry with ketamine and coordinated with two doctors to supply more than $50,000 of the drug in the weeks before Perry's October 2023 death in his backyard hot tub in Los Angeles.
  • After pleading guilty in August 2024 to conspiracy to distribute ketamine causing death, Iwamasa admitted to repeatedly injecting Perry, including multiple times on the day he died; medical officials determined acute ketamine effects caused the overdose, with drowning as a contributing factor.
  • Beyond prison time, Iwamasa faces two years of supervised release and a $10,000 fine; in court, he stated he was 'horribly, horribly sorry' for illegal acts he would 'forever regret' while Perry's mother Suzanne Morrison wrote that 'We trusted a man without a conscience, and my son paid the price.'
  • All five defendants pleaded guilty, with the 'Ketamine Queen' Jasveen Sangha sentenced to 15 years in April and Dr. Salvador Plasencia to 30 months in December; Perry's sisters Caitlin Morrison and Madeline Morrison expressed conflicting views, with Caitlin stating she had 'no sympathy' while Madeline told the judge Iwamasa was 'more culpable' than Sangha.
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Kenneth Iwamasa, 60, the personal assistant to Matthew Perry, was sentenced to 41 months in prison, ending a years-long legal battle following the actor's death. Iwamasa also injected the actor with ketamine on the day of Perry's death, who was battling addiction. In the weeks before his death, he worked with two doctors to deliver more than $50,000 worth of the drug to Perry. The assistant had no medical training. Matthew Perry was found dead i…

·Hungary
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'Shoot me up with a big one': A timeline of the last days of Matthew Perry

The prosecution of five people in the drug death of actor Matthew Perry ended Wednesday with the sentencing of the personal assistant of the “Friends” star. Sixty-year-old Kenneth Iwamasa was at Perry's side in the final weeks of his life.…

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On Wednesday, a U.S. court sentenced former actor Matthew Perry's personal assistant (Friends) to three years and five months in prison for giving him the injections of ketamine that resulted in his death by overdose in October 2023.Judge Sherilyn Peace Garnett ruled that Kenneth Iwamasa, 59, must be presented to California's judicial authorities before noon on July 17 and pay a $10,000 fine to the U.S. government.

·Las Condes, Chile
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The then assistant to Friends actor Matthew Perry was sentenced to prison.

·Zürich, Switzerland
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King5 News broke the news in Seattle, United States on Wednesday, May 27, 2026.
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