By Alynda Wheat
June 08, 2009 at 12:00 PM EDT

Thai authorities said today that they won’t know the cause of actor David Carradine’s death until toxicology and autopsy results come in a month from now, Reuters reports. The Kill Bill and Kung Fu star was found dead in the wardrobe of his room at the Swissotel Nai Lert Park last Thursday, with ligatures reportedly around his neck, wrists, and genitals. Deputy Bangkok police chief, Lieutenant-General Amnoy Nimmino, told reporters at a press conference Monday, “We are still investigating but we will not make any assumptions about his death until we have gathered all the facts.” It was first reported last week that Carradine, in Bangkok to film the movie Stretch, committed suicide, a claim strongly refuted by his family, who has asked the FBI to take a role in the investigation. Brother Keith Carradine added in a statement released by his attorney, Mark Geragos, that the family is “profoundly disturbed” by the publication of a photo by a Thai newspaper purportedly of Carradine’s hanging, naked body, and has threatened legal action.