text:  According to friends, Perry had a ketamine infusion a week and a half before he died. Since the drug is metabolized in a matter of hours, the amount in his system at the time of his death came from somewhere else. According to People, the LAPD has been working with the DEA and the U.S. Postal Service to determine where that ketamine came from. The decision whether to press charges will be up to the U.S. Attorney's Office.