Robin Williams died of asphyxia by hanging

The cause of death of 63-year old actor Robin Williams has been determined - asphyxia due to hanging.

According to preliminary findings, the Oscar-winning actor hanged himself with a belt wedged between a closet door and a door frame inside his Northern California home. His body was found by his assistant who became concerned after the actor failed to respond to knocks on his bedroom door.

A pocket knife was also found near him and there were superficial cuts on his left wrist.

Robin Williams was last seen alive by his wife Sunday night before she retired for the night. She left Monday at around 10 am thinking her husband was still sleeping.

The actor had publicly battled depression and addiction, and according to his publicist, Mara Buxbaum, he had recently been suffering from severe depression. He returned to a rehabilitation facility just last month for alcohol addiction.

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