Matthew Perry’s death ‘investigated by postal service’ in new Ketamine probe | Celebrity News | Showbiz & TV

In TMZ’s words: “Law enforcement sources tell us there is an ongoing investigation into where Matthew got the ketamine that ended up playing a part in his death and the main questions are who provided the drug, and under what circumstances.

“Our sources say both local police and the DEA have been looking into this matter for months, but it’s unclear where exactly investigators are in the probe. We do know they’ve already interviewed some key people in Hollywood.”

The LAPD told ABC News: “Based on the Medical Examiner’s findings, the Los Angeles Police Department, with the assistance of the Drug Enforcement Administration and the United States Postal Inspection Service, has continued its investigation into the circumstances of Mr. Perry’s death”.

When Perry was found unresponsive, his blood ketamine levels were at 3,540 ng/ml in peripheral blood, and 3,271 in central blood, around the same as a hospital patient under general anaesthetic would experience.

The medical examiner confirmed that anywhere between 1,000 and 6,000 is normal for someone under anaesthetic.

They added: “Drowning contributes due to the likelihood of submersion into the pool as he lapsed into unconsciousness; coronary artery disease contributes due to exacerbation of ketamine induced myocardial effects on the heart.”

No alcohol, cocaine, meth, heroin or fentanyl was found in the actor’s system. He had previously been receiving ketamine infusion therapy to treat depression but his last session was a week and a half before his tragic death, while the drug only stays in the system for three to four hours.

The post-mortem examination revealed that Perry had been “reportedly clean for 19 months” prior to his untimely death.

The method by which he ingested the ketamine that ultimately led to his demise remains a mystery, with no pills reported “near the pool” or “found adjacent” to it.

The therapy could not feasibly result in such elevated levels of the drug persisting in his system. Heartbreakingly, Matthew expended approximately $9million in his quest for sobriety, and sought treatment in rehab on 15 separate occasions.