A Boulder man in his early 20s fell to his death today while hiking with a friend near the 2.6 mile marker on Flagstaff Mountain Road, according to the Boulder County Sheriff’s Department.

Boulder County Sgt. Brian Lindsey said the man lost his balance and fell backward about 150 feet. His friend called for help at about 3:30 p.m., he said, and the man was pronounced dead at the scene.

The man’s name is being withheld pending notification of next of kin. Lindsey said one of the two hikers attended the University of Colorado at Boulder, but he didn’t know if the man who died was the CU student.

Members from Rocky Mountain Rescue, Boulder Fire Department, Boulder Mountain Parks, AMR ambulance, Boulder County Coroner and the Boulder County Sheriff’s Office assisted. Two unrelated hikers also assisted by performing CPR on the fallen hiker.