Black Sabbath icon's death. "The love, support, and beautiful messages I've received from so many of you have truly helped carry me through the hardest moment of my life," she wrote in an Instagram story.

An official cause of death has been confirmed for Ozzy Osbourne. The legendary Black Sabbath frontman died of a heart attack and also suffered from coronary artery disease and Parkinson’s disease, according to a death certificate filed at a registry in London and obtained by The New York Times.

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.