Tom Petty died of an accidental drug overdose. His family shared the news to 'save lives.'

Tom Petty died of an accidental drug overdose. His family shared the news to 'save lives.'  Washington Post Family: Tom Petty died of accidental drug overdose  ABC News US musician Tom Petty died of 'accidental drug overdose'  BBC News The Official Website of Tom Petty & The Heartbreakers  Tom Petty Tom Petty died of accidental drug overdose, coroner's office says  Los Angeles TimesFull coverage