The remains of Peter Louis Kastner, the Oklahoma man missing in Yellowstone National Park since May, was discovered off trail by researchers. A subsequent autopsy showed that Kastner died from a self-inflicted gunshot wound.
The search goes on for a man missing in Yellowstone National Park since early Monday morning; with family members worried about his mental state, National Park Service officials are asking for help from the public.
National Park Service officials are searching for an Oklahoma man presumed to be lost in the greater Hellroaring Trail area of Yellowstone National Park, but there's an additional layer of mystery involved.
Yellowstone Insider Your Complete Guide to America's First National Park