RadarOnline.com shows the following photo from Thai Rath, one of the oldest newspapers in Thailand:
NewsnIdea.com commented that, "David Carradine was hung accidentally by his neck and other body parts. Natural assumption from this is that he was engaged in some sort of auto-erotic asphyxiation."
From what I can see, however, he doesn't look very hung. That he was hanged, however, is right there in living color.