Oregon ? Brian Sean Griffith, a former bodyguard to figure skater Tonya Harding who admitted a role in the attack on her rival Nancy Kerrigan during Olympics tryouts, has died. He was 40.

Griffith died Wednesday of what his doctor reported as natural causes, according to the Washington County medical examiner’s office. The specific cause of death is expected to be listed when the doctor files a death certificate, which could take two weeks, the medical examiner’s office said.

Formerly Shawn Eckardt, Griffith had changed his name since the attack in an attempt to put it behind him.

Griffith, of Beaverton, was Harding’s bodyguard when the Portland-born skater competed for a spot on the U.S. Olympic figure skating team in 1994.

That January, an assailant clubbed Kerrigan in the knee, forcing her out of the competition.