Ozzy Osbourne died of a heart attack and had coronary artery disease in addition to suffering from Parkinson’s disease for years, his death certificate said.

Osbourne had been living with long-term health issues for years before he died on July 22 at age 76. Per the Times, Osbourne’s certificate officially said that the icon died of cardiac arrest, acute myocardial infarction, coronary artery disease and Parkinson’s disease with autonomic dysfunction.

Additional details about heavy metal icon Ozzy Osbourne's death last month have surfaced, including his cause of death and additional factors.