LA County Coroner Withholds Tom Petty Autopsy Report, Pending Toxicology

The Los Angeles County coroner's department is investigating the death of singer Tom Petty, reports the Associated Press.

Department spokesman Ed Winter says an autopsy was conducted Tuesday but that further examination is needed to determine the exact cause of death.

Petty was 66 years old when he died Monday at Santa Monica UCLA hospital. A spokeswoman said he went into cardiac arrest at his Malibu home, and was rushed to Santa Monica where he died.

While a crime is not suspected, Winter says the coroner investigates all deaths where the deceased hadn't seen a doctor in six months.

Winter says results of toxicology screening - to determine whether Petty had any drugs in his system - could take several weeks.