The body of a 39-year-old man from Colorado was found halfway up the Loft in Rocky Mountain National Park Sunday afternoon.

The man was winter mountaineering with two other men. They intended to summit Longs Peak when the man decided to return to the Longs Peak trailhead alone, said Kyle Patterson, spokeswoman for Rocky Mountain National Park. The man was last seen at the top of the Loft around 9:30 a.m. Saturday morning.

When the man’s two friends returned to Longs Peak trailhead later in the day, they noticed his vehicle was still in the parking lot and reported him missing to park rangers at 6:15 p.m., Patterson said. Rocky Mountain National Park Search and Rescue began a search early Sunday morning in the Longs Peak area.

The man’s body was retrieved by helicopter and taken to the Boulder County Coroner’s Office. Patterson said the investigation is ongoing and the man’s name will be released when his next of kin are notified.

Updated March 22, 2017 at 8:2 a.m. null