Michael Mantenuto, 35, was found dead in his car at Saltwater State Park on Monday afternoon in De Moines in King County, Washington.
It was reported that a Washington State coroner said the cause of death was a self-inflicted gunshot wound.
Announcing his death, U.S. Army Col. Guillaume Beaurpere wrote in a Facebook post on Wednesday that Mantenuto sustained a self-inflicted gunshot wound.
“Those of you that knew Mike will remember him for his passionate love for his family and his commitment to the health of the force,” he wrote.
Mantenuto starred alongside Kurt Russell in the Disney sports film about the 1980 U.S. hockey team’s victory over the Soviet Union team.
He also appeared in TV movie Dirtbags in 2006 with Melissa Joan Hart, and his final role was in 2008 comedy Surfer, Dude starring Matthew McConaughey and Woody Harrelson.
He is survived by his wife, Kati Vienneau, and two children, Ava and Leo.