Ozzy Osbourne’s cause of death has been confirmed less a week after the heavy metal pioneer was laid to rest in his native England .

Osbourne’s death certificate , obtained by The New York Times on Tuesday, reveals the Black Sabbath frontman died from a heart attack. Coronary artery disease and Parkinson’s disease were listed as contributing factors.

Osbourne’s death at the age of 76 was announced by his family on July 22.

“It is with more sadness than mere words can convey that we have to report that our beloved Ozzy Osbourne has passed away this morning ,” their statement read. “He was with his family and surrounded by love. We ask everyone to respect our family privacy at this time.”

The legendary rocker died just weeks after his farewell show with Black Sabbath in Birmingh

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