Kenneth Iwamasa, the longtime live-in assistant of Matthew Perry, has been sentenced to 41 months in federal prison for his role in the actor’s fatal ketamine overdose case. Perry (L) was found unresponsive in the hot tub of his Los Angeles home on Oct. 28, 2023. Iwamasa (R) had worked closely with Perry for years and was considered one of the actor’s most trusted aides. (Reuters, AP) According to court proceedings reported by Entertainment Weekly, Iwamasa pleaded guilty last year to conspiracy to distribute ketamine after admitting he injected Perry with the drug multiple times, including three injections on the day the “Friends” star died in October 2023. During sentencing in Los Angeles federal court on Wednesday, US District Judge Sherilyn Peace Garnett criticized Iwamasa’s conduct, telling him: “You were privy to his struggle with addiction. Your conduct was reckless.” The sentencing effectively closes the nearly three-year federal investigation into Perry’s death. Who is Kenneth Iwamasa? Iwamasa, 60, had worked closely with Perry for years and was considered one of the actor’s most trusted aides. …