Kenneth Iwamasa was sentenced Wednesday to three years, five months in prison for injecting actor Matthew Perry with the ketamine that killed him.

Kenneth Iwamasa, who made $150,000 a year as a former live-in assistant to Matthew Perry, is sentenced to 41 months in prison for his role in the actor's death.

Caitlin and Madeline Morrison, the actor's half-sisters, described Kenneth Iwamasa's alleged deceit in letters to the court ahead of his sentencing for Perry's death.

Kenneth Iwamasa, who pleaded guilty last year to one count of conspiracy to distribute ketamine causing death, said he "will forever regret" his actions.

Matthew Perry's assistant, Kenneth Iwamasa, will be the fifth and final person sentenced for playing a role in the actor's 2023 ketamine death. Carter Evans reports.

Kenneth Iwamasa, Perry's friend of 25 years, admitted in 2024 that he had injected the actor with ketamine three times the day he died, as well as on previous occasions.

Matthew Perry's former assistant is sentenced over his involvement in the actor's death. Release date: 27 May 2026

Matthew Perry's former assistant Kenneth Iwamasa has been sentenced, marking the end of the criminal proceedings over the "Friends" actor's death.