What happened to David Carradine?

Jun 8, 2009 at 1:57 p.m. ET

A week after the body of David Carradine was found hanging in a hotel closet, his death remains a mystery.

Police in Thailand continue to investigate the odd death of Carradine, who enjoyed a long Hollywood career, mostly in kung fu films and television shows. Carradine was found hanging in the closet of a Bangkok hotel room, with ropes around his neck, wrists and genitalia.

Thai authorities -- who have come under fire for leaking an internal photo of the crime scene to a local tabloid -- believe Carradine killed himself. They think his death came either purposefully as an act of suicide, or accidentally while pleasuring himself in a dangerous game of autoerotic asphyxiation.

No suicide note was found at the scene.

During his 2003 divorce from ex-wife Marina Anderson, Carradine was accused of being a fan of unnamed "potentially deadly" kinky sex acts.

The actor’s family is livid at the information Thai authorities have given to the press and are launching their own full-scale investigation into the matter and asking the FBI to get involved. They refuse to believe Carradine killed himself, saying he was in the middle of multiple projects and was not depressed.

The high-profile lawyer for the family, Mark Geragos, says ninjas may be to blame. During an appearance on Larry King Live, Geragos expounded on the theory when asked about Carradine’s interest in kung fu secret societies.

"(That) is connected to martial arts and his interest in martial arts," he says. "And so there is a suspicion that, if there was some foul play, that that may be the first area where they should look."

Such secret societies date back centuries and were originally intended to defend the common man from corruption in the Chinese government; however, in the last 200 years, many have turned to organized crime. Carradine had reportedly begun investigating such groups. A similar theory was presented upon the death of Bruce Lee in 1973.

"If he was involved in secret societies, it was a secret that even I didn't know about," said ex-wife Anderson. "But he did have some big secrets."