Matthew Perry's assistant accused of destroying evidence in actor's death

Jami Ganz, New York Daily News on May 26, 2026

By clicking submit, I authorize Arcamax and its affiliates to: (1) use, sell, and share my information for marketing purposes, including cross-context behavioral advertising, as described in our Privacy Policy , (2) add to information that I provide with other information like interests inferred from web page views, or data lawfully obtained from data brokers, such as past purchase or location data, or publicly available data, (3) contact me or enable others to contact me by email or other means with offers for different types of goods and services, and (4) retain my information while I am engaging with marketing messages that I receive and for a reasonable amount of time thereafter. I understand I can opt out at any time through an email that I receive, or by clicking here

Matthew Perry’s former live-in assistant Kenneth Iwamasa, scheduled for sentencing Wednesday in connection with the “Friends” star’s fatal ketamine overdose, is now being accused of having destroyed evidence.

Five-time Emmy nominee Perry, who had a decades-long history with substance abuse, was just 54 when he died on Oct. 28, 2023, due to “the acute effects of ketamine.” In summer 2024, Iwamasa was one of five people arrested in relation to the actor’s death.

Federal prosecutors allege that just after Perry died, Iwamasa ordered someone identified as “B.M.” to toss ketamine vials and syringes, and do away with digital and physical records, according to a new court filing obtained Tuesday by TMZ. The latter allegedly included a prescription for ketamine and a note naming Dr. Salvador Plasencia as a source for the drug.

Iwamasa at the time allegedly also said on a phone call with Erik Fleming that he “cleaned up the scene” and “deleted everything,” even going so far as to change Perry’s passwords.

Initially, Perry’s former confidant also neglected to tell authorities he’d injected the actor with ketamine multiple times on that fateful day and falsely accused Perry of having been the one to stash away the bottles, per the filing.

By the time news of Iwamasa’s arrest broke in mid-August 2024, he’d already cut a plea deal, copping to one count of conspiracy to distribute ketamine causing death. It was at that time he admitted that, despite lacking medical training, he’d repeatedly injected the actor with ketamine, including on Oct. 28, 2023.

“Matthew kept secrets,” a source close to Perry told Us Weekly at the time of Iwamasa’s arrest. “I wouldn’t be shocked if Kenny was the only one who knew how bad it really was.”

Prosecutors want Iwamasa to spend 41 months in custody.

Fleming and Dr. Mark Chavez also pleaded guilty in August 2024 to one count each of conspiracy to distribute ketamine. The former also pleaded guilty to one count of distribution of ketamine resulting in death.

Plasencia, also known as “Dr. P,” was sentenced in December 2025 to two-and-a-half years in federal prison for repeatedly selling Perry ketamine, despite knowing his history.

Just last month, drug dealer Jasveen “Ketamine Queen” Sangha was sentenced to 15 years in federal prison for selling ketamine that contributed to at least two deaths, including Perry’s.