A preliminary investigation has concluded that beloved comedian Robin Williams died of suicide by asphyxiation, authorities in Marin County, California have confirmed.
The Mrs. Doubtfire actor was found in his home on Monday morning by his personal assistant who called 911.
Robin Williams was found dead on Monday aged 63
Lt. Keith Boyd, assistant deputy chief coroner of the Marin County Sheriff's Office revealed that Robin was confirmed dead by paramedics at 12.02pm, and added that toxicology results and a full forensic examination will be available in two to six weeks.
He also confirmed that Robin's wife Susan Schneider was the last person to see the 63-year-old Oscar winner on Sunday evening.
Robin's representative said in an official statement on Monday that the star had been battling severe depression, before adding: "This is a tragic and sudden loss. The family respectfully asks for their privacy as they grieve during this very difficult time."
Robin Williams and his daughter Zelda
Robin Williams as Mrs Doubtfire
ROBIN WILLIAMS: HOLLYWOOD PAYS TOUCHING TRIBUTE TO A LEGEND
He is survived by his three children: Zachary Pym, 31, Zelda Rae, 25, and 23-year-old Cody Alan Williams.