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Kenneth Iwamasa Sentencing and Role in Matthew Perry's Death

Friday, May 29, 2026
5 min read
Kenneth Iwamasa Sentencing and Role in Matthew Perry's Death

Kenneth Iwamasa got a sentence on Wednesday. Three years and five months in prison. Judge Sherilyn Peace Garnett handed it down in federal court in Los Angeles.

He was 60.

This was the end of the two-and-a-half-year investigation. It followed Matthew Perry’s death back in October 2023.

Iwamasa was Perry’s live-in assistant. A major part in the ketamine addiction. He gave Perry the deadly dose.

Judge Garnett spoke before sentencing. She said, “You knew about his struggle with addiction.” Reckless actions. Not just on the day he died. But in the days before.

The sentence was what the prosecutors wanted. But the judge disaGreed on some stuff. She felt Iwamasa didn’t abuse a position of trust. That could have meant more time behind bars.

She also said, “There’s no hard evidence that you acted with malicious intent.” Though some people would disaGree with that.

Iwamasa was with Perry in those final days. He was the enabler. The drug messenger. The unofficial doctor. He was the last person to see Perry alive. And the one who found him dead in the Jacuzzi.

He was the first to talk to prosecutors. Pled guilty in August 2024. To conspiracy to distribute ketamine resulting in death. He became their main witness.

Iwamasa had a lawyer, Alan Eisner. Eisner asked for six months. Six months of home confinement. He claimed he was just following orders. From a much more powerful boss.

“His loyalty to Mr Perry was everything,” Eisner told the judge. “He worshipped Mr Perry. All he did was try to please and help him.”

When Eisner pushed back, saying Iwamasa couldn’t have acted differently, the judge cut him off. “Unwilling. Not unable. He could have said no.”

Perry’s family sent letters to the judge. They blamed Iwamasa most for the death. A longtime friend. They thought he would help Perry stay sober. Instead, he gave in to the worst habits.

Perry’s mother, Suzanne Morrison, wrote something heavy. “Matthew trusted Kenny. We trusted Kenny. Kenny’s most important job was to be my son’s companion and guardian in his fight against addiction.” Then she added, “We trusted a man without a conscience, and my son paid the price.”

Perry hired Iwamasa in 2022. Paid him $150,000 a year. To live at his home. To be his assistant.

Perry had been taking ketamine legally for depression. But he wanted more. More than his doctor would give.

Iwamasa’s plea deal mentioned buying extra ketamine. From another doctor, Salvador Plasencia. Plasencia taught him how to inject it. Plasencia got two and a half years in prison back in July.

Iwamasa also started buying from Perry’s acquaintance, Erik Fleming. Fleming got it from a street dealer. Fleming was sentenced to two years in prison just two weeks ago.

The dealer, Jasveen Sangha—known as ‘The Ketamine Queen’—got fifteen years on April 8.

In Perry’s last days, Iwamasa was injecting him. Six to eight times a day.

October 23, 2023. Iwamasa gave Perry a large dose. Then he left to run errands. He came back. Perry was dead in the Jacuzzi.

The LA County Medical Examiner found ketamine was the main killer. Drowning was the secondary cause.

At first, Iwamasa lied to the police. He left out the ketamine from Perry’s medications. He didn't mention the injections. But when investigators searched his home in January 2024, he started telling the truth.

Perry. He was one of the biggest stars of his generation. With Courteney Cox. Jennifer Aniston. Matt LeBlanc. David Schwimmer. Lisa Kudrow. All on ‘Friends.’ Running from 1994 to 2004.

Written by Gree News Team — Senior Editorial Board

Gree News Team covers international news and global affairs at Gree News. Our collective of senior editors is dedicated to providing independent, accurate, and responsible journalism for a global audience.

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