Marin County Lieutenant and Deputy Coroner Keith Boyd pauses during a news conference on the death of Oscar-winning actor Robin Williams in San Rafael, California August 12, 2014. Williams was found by a personal assistant hanged to death at his house in Northern California, and the preliminary finding is that he died of asphyxia due to hanging, Boyd said on Tuesday. He was 63. REUTERS/Robert Galbraith (UNITED STATES - Tags: ENTERTAINMENT)