(CNN) Robin Williams apparently died of asphyxia due to hanging, Marin County Sheriff's Lt. Keith Boyd said Tuesday. The final cause will not be certified for several weeks, said Boyd, who also is the county's Assistant Chief Deputy Coroner
Williams' body was found "slightly suspended in a seated position" with a belt around his neck, Boyd said. The other end of the belt was between a closed door and the door frame, said Boyd, who also is the county's assistant chief deputy coroner.
Williams' left wrist had cuts when he was found dead in a bedroom at his home, Marin County Sheriff's Lt. Keith Boyd said Tuesday. A pocket knife was found near his body, and a red material consistent with dried blood was found on the knife, Boyd said. He said tests will be conducted to determine whether the substance is blood.
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