The LAPD launches a criminal investigation into the death of Matthew Perry after the Medical Examiner's report is released and is nearing its conclusion. 

A source close to the investigation tells People the police believe multiple people should be charged. The LAPD is working with the Drug Enforcement Administration, DEA, and the U.S. Postal Inspectors attempting to find out where the ketamine that killed Matthew Perry came from. 

Will someone be charged?