Robin Williams hanged himself.
According to TMZ, sources familiar with the situation have told the website that the 'Mrs. Doubtfire' actor - who was found dead yesterday (11.08.14) aged 63 - took his own life by hanging himself inside the main part of his house in Tiburon, California.
Insiders also believe the Hollywood legend - who was in rehab last month - did not leave a suicide note.
Following news of Robin's death, his publicist released a statement, saying: ''Robin Williams passed away this morning. He has been battling severe depression of late. This is a tragic and sudden loss.
''The family respectfully asks for their privacy as they grieve during this very difficult time.''
Robin leaves behind his children Zak, 31, Zelda, 25, and Cody, 23, as well as his wife of three years Susan Schneider, who has been left ''utterly heartbroken'' by her husband's death.
She told the New York Times newspaper: ''This morning, I lost my husband and my best friend, while the world lost one if its most beloved artists and beautiful human beings. I am utterly heartbroken.
''On behalf of Robin's family, we are asking for privacy during our time of profound grief. As he is remembered, it is our hope that the focus will not be on Robin's death but on the countless moments of joy and laughter he gave to millions.''
Robin's daughter Zelda has also posted a touching tribute to her father on Instagram.
She posted a quote from 'The Little Prince' writer Antoine de Saint-Exupéry, which read: ''You - you alone have the stars as no one else has them ... In one of the stars I shall be living. In one of them I shall be laughing. And so it will be as if all the stars are laughing, when you look at the sky at night. You - only you - will have stars that can laugh.''
She added underneath the quotation: ''I love you. I miss you. I'll try to keep looking up.''
Law enforcement officials are expected to hold a news conference later today (12.08.14).