Prominent among the names is 41-year-old Jasveen Sangha, a dual US-British citizen who in Hollywood circles has been dubbed “the queen of ketamine.” According to the prosecution, she provided Perry’s fatal dose. She has pleaded not guilty; if found guilty at trial, she could be sentenced to life in prison.

Iwamasa, who admitted in court documents to administering the ketamine on the day that Perry died, pleaded guilty in August 2024 to one count of conspiracy to distribute ketamine causing death, the DOJ said. He is scheduled to be sentenced in November.

One of the doctors accused of providing ketamine to actor Matthew Perry, who died in October 2023, has pleaded guilty to four counts of distribution of ketamine, according to federal prosecutors.