American singer-songwriter, multi-instrumentalist, record producer Tom Petty was found unconscious at his home, not breathing and in cardiac arrest and was taken to the UCLA Medical Center in Santa Monica, California, where he died at 8:40 pm. The Los Angeles County Medical Examiner later announced that Petty had died accidentally from mixed drug toxicity. He was the lead singer and guitarist of Tom Petty and the Heartbreakers, formed in 1976. He previously led the band Mudcrutch, and was also a member of the late 1980s supergroup the Traveling Wilburys. In his career, he sold more than 80 million records worldwide, making him one of the best-selling music artists of all time.