Keith Boyd

Oscar-winning actor and groundbreaking comedian Robin Williams hanged himself with a belt in his Northern California home after he had sought treatment for depression, a coroner said on Tuesday, based on preliminary findings.

A last-minute ticket buying frenzy a week before Christmas inflated Tuesday's Mega Millions jackpot to $636 million, threatening to become the biggest US lottery prize in history, a game official said.

Oscar-winning actor and groundbreaking comedian Robin Williams hanged himself with a belt in his Northern California home after he had sought treatment for depression, a coroner said on Tuesday, based on preliminary findings.

A last-minute ticket buying frenzy a week before Christmas inflated Tuesday's Mega Millions jackpot to $636 million, threatening to become the biggest US lottery prize in history, a game official said.