Ozzy Osbourne died from a heart attack and suffered from Parkinson’s and coronary artery disease, according to a death certificate filed in London and obtained by the New York Times. The certificate,

Osbourne’s death certificate reveals the Black Sabbath frontman died from a heart attack. Coronary artery disease and Parkinson’s disease were listed as contributing factors.

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