David Carradine may have died accidentally from suffocation or heart failure during an auto-erotic sex act, according to Thai police. David Carradine may have died in a sex act gone wrong

The Kung Fu and Kill Bill star was found with a noose around his neck and another rope around his genitals in a wardrobe in his hotel room in Bangkok.

Police commander Lieutenant General Worapong Siewpreecha said it was unclear whether the 72-year-old killed himself or died from suffocation or heart failure due to ejaculation.

"There was a rope tied around his neck and another rope tied at his sex organ, and the two ropes were tied together and hung in the closet," he said.

"Under these circumstances we cannot be sure that he committed suicide but he may have died from masturbation."