Robin Williams, 63, was found dead in his California home on August 11th in what authorities soon ruled a suicide.
A Marin County coroner's report released on Friday found Williams died from asphyxia due to hanging. He was not under the influence of drugs or alcohol at the time of his suicide. Williams had been treated for depression and he has talked about his struggles with mental illness and addiction.
On the morning he was found, the actor's personal assistant became concerned when he did not respond to knocks on the door, authorities say. The assistant entered the room and found the comic hanging from a belt.
Unconfirmed reports say that authorities asked his wife, Susan Schneider, if her husband was interested in auto-erotica. Schneider said he was not - but added that he was left troubled by his work on his 2009 movie, World's Greatest Dad, in which his character's son died after hanging himself for sexual gratification.
Williams won an Academy Award for his role in Good Will Hunting. Other films he starred in include Good Morning Vietnam, Jumanji and Mrs Doubtfire. He first gained fame as a lovable alien in the hit television show Mork and Mindy.