Tom Petty died of accidental overdose: family

American rocker Tom Petty died in October of an accidental drug overdose after taking a variety of medications for his ailments including a mix of opioid painkillers, his family and the Los Angeles county medical examiner said Friday. The autopsy report says the 66-year-old Petty had fentanyl, oxycodone, temazepam and other drugs in his system when…