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.

Ozzy Osbourne's cause of death has reportedly been determined. The former Black Sabbath frontman and reality TV personality died of "out of hospital cardiac arrest" and "acute myocardial infarction," with coronary artery disease and Parkinson's disease with autonomic dysfunction listed as "joint causes at age 76 on July 22.