Ozzy Osbourne died of heart attack, death certificate shows

Legendary heavy metal rocker Ozzy Osbourne's cause of death has been revealed after he died last month at the age of 76. The Black Sabbath frontman, who was diagnosed with Parkinson's disease in 2019, passed away on July 22 surrounded by his family.According to his death certificate, the singer died from an 'acute myocardial infarction' and 'out of hospital cardiac arrest'.