An independent autopsy of Hollywood actor David Carradine by high-profile forensics expert Dr. Michael Baden has determined the star of Kill Bill vols., 1&2 and the 70’s television series Kung Fu did not suicide.

The 72-year-old actor’s body was found naked, curled up inside the wardrobe of the Swissotel Nai Lert Park hotel with one end of a shoelace tied around his penis and the other end fastened around his neck. Both of his hands were bound with a cord, which was also tied around his neck.

Dr. Baden said further information from Thailand is needed for a final determination.

Keith and Robert Carradine thanked U.S. and Thai authorities for their work and asked for understanding as Thai authorities investigate.

The pair also said they’re grateful for the outpouring of support during what they call a “profoundly painful time.”

The dead stars family has consistently disputed initial Thai police claims that he committed suicide or that his death was a result of autoerotic asphyxiation.