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,

Ozzy Osbourne, the heavy metal and reality television star, died of a heart attack and had suffered from coronary artery disease and Parkinson’s, according to a death certificate filed at a registry in London.

Ozzy Osbourne's cause of death has been revealed to be a heart attack, according to his death certificate publicly filed in London on Tuesday. The document further noted that the Black Sabbath frontman and beloved Prince of Darkness also suffered from Parkinson's disease prior to his death at age 76 two weeks ago.