Additional details about heavy metal icon Ozzy Osbourne's death last month have surfaced, including his cause of death and additional factors.

According to newly released medical reports, Ozzy Osbourne died from a heart attack. The revelation puts to rest countless theories that circulated online, including speculation that his decades of hard partying or long-term illnesses were to blame.

Ozzy Osbourne died at age 76 of a heart attack, according to his death certificate obtained by the New York Times and the U.K. Sun.