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

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 died of a heart attack, his death certificate has revealed. The Black Sabbath front man, who was 76, died last month, two weeks after playing his farewell concert at Villa Park in his home city of Birmingham.