Federal agents found a dead body while training with snowmobiles last week in Pend Oreille County.
U.S. Border Patrol agents were in the mountains northeast of Sullivan Lake when they found the body of a adult male, the Pend Oreille Sheriff's Office announced Monday.
Deputies say the man is a 61-year-old from Los Angeles. His identity is being withheld until his family is notified of his death.
Investigators believe the man left his vehicle on foot and died and hypothermia, the sheriff's office said.