The investigation into the death of actor Matthew Perry is nearing its conclusion, with multiple individuals linked to his acquisition of a lethal amount of ketamine found in his blood. Law enforcement sources revealed that prosecutors will soon decide on filing charges against those associated with Perry's procurement of the drug. The criminal probe involves the LAPD, DEA, and USPS tracking Perry's illegal drug acquisition, as ketamine has been both recreationally used and utilized for depression treatment. Perry's death was a result of cardiovascular overstimulation and respiratory depression from the ketamine overdose, despite undergoing ketamine therapy with medical professionals. No other drugs were found in his system, and the lack of drug paraphernalia in his home raises questions about how the high levels of ketamine were present. The investigation highlighted his psychiatrist and anesthesiologist as his primary care physicians in October.