The investigation into 's untimely death has officially concluded.

The Los Angeles Police Department exclusively confirms to PEOPLE that authorities have determined they would no longer be looking into the alum's death.

The Los Angeles County Medical Examiner-Coroner also confirms on their website that the case regarding Perry's death is considered "closed."

Perry  on Saturday, Oct. 28, 2023 at his Los Angeles home. He was 54. A spokesperson from the Los Angeles Fire Department told PEOPLE at the time they responded to a call at 4:07 p.m. that cited a “medical emergency.”

The actor's death was later

by acute effects of ketamine in an autopsy report obtained by PEOPLE in December. Drowning, coronary artery disease and buprenorphine effects (a medication used to treat opioid use disorder) were also listed as contributing factors in his death, which was ruled accidental.

The autopsy stated that Perry — who was "reportedly clean for 19 months" — was on ketamine infusion therapy, with his latest treatment taking place just "one and a half weeks before" his death. However, the coroner noted that "the ketamine in his system at death could not be from that infusion therapy, since ketamine's half-life is 3 to 4 hours, or less.

"

Prior to his death, Perry was vocal about his struggle with addiction. In his 2022 memoir, , he recounted his journey to sobriety — and his sense of pride for staying clean. 

“I wanted to share when I was safe from going into the dark side again,” he told PEOPLE at the time for a 2022 cover story. “I had to wait until I was pretty safely sober—and away from the active disease of alcoholism and addiction—to write it all down. I was pretty certain that it would help people if I did.”

Perry was best known for his role as Chandler Bing on the 90s sitcom, . Throughout his career, he spoke highly of the role that brought him — and fellow cast members, 

. , ,  and  — breakout fame.

"It changed my life in every way. I got the show when I was a 24-year-old man; the show ended when I was 34. It formed my life. And it was the time of my life," Perry previously told PEOPLE.

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Of the cast’s support through his ongoing addiction, Perry said, "They were understanding, and they were patient.

”

He concluded: “It's like penguins. In nature, when one is sick or very injured, the other penguins surround it and prop it up and walk around until that penguin can walk on its own. And that's kind of what the cast did for me."