Jack Osbourne has broken his silence to pay tribute to his late father Ozzy Osbourne after the Black Sabbath frontman was laid to rest at a private funeral service

Ozzy Osbourne 's cause of death has been determined. According to a death certificate obtained by the New York Times and The Sun , the legendary rock star died of "out of hospital cardiac arrest" and "acute myocardial infarction," with coronary artery disease and Parkinson's disease with autonomic dysfunction listed as "joint causes."

Ozzy Osbourne's cause of death has been revealed, two weeks after the Black Sabbath frontman and reality TV icon died aged 76.