Ozzy Osbourne’s cause of death has been revealed. The Black Sabbath frontman officially died at age 76 from cardiac arrest, acute myocardial infarction, coronary artery disease and Parkinson’s disease on July 22, according to a death certificate obtained by the Sun on Tuesday.

Ozzy Osbourne's cause of death has been revealed. The Black Sabbath rocker died at age 76 from a heart attack, according to his death certificate obtained by The New York Times and The Sun. The death certificate reportedly listed Osbourne's cause of death as "out of hospital cardiac arrest,