Cory also voluntarily entered a treatment facility for his addiction in April . Monteith has been frank about his past , saying that he started using drugs at 13 . Coroner : Monteith died as a result of ` ` a mixed drug problem , involving heroin and cocaine ''
Cory Monteith voluntarily entered a treatment facility for substance addiction in April . Monteith has been frank about his struggles , saying that he began using drugs at 13 . Coroner : Monteith died as a result of `` a mixed drug toxicity , involving heroin and alcohol ''