A 26-year-old man died after jumping from Running Eagle Falls into a shallow pool at its base/Wikimedia Commons file photo

A 26-year-old man, possibly seeking a cooling respite from a warm spring day, was killed at Glacier National Park in Montana when he jumped from a waterfall into a shallow pool.

The man, whose name and hometown were not immediately released, was pronounced dead Wednesday afternoon at Running Eagle Falls on the east side of the park in the Two Medicine area.

Park dispatchers received a call about 3:45 p.m. Wednesday that the man had jumped into the pool and sustained life-threatening injuries.

"Park rangers arrived on the scene within minutes of receiving the call and performed CPR. ALERT, Glacier Emergency Services, Blackfeet Emergency Medical Services, Blackfeet Law Enforcement Services and the Glacier County Sherriff’s Department also responded to the scene. The patient was pronounced dead at approximately 4:30 p.m. by advanced life services medical personnel at the scene," a park release said.

The initial investigation indicated the man jumped from the waterfall on his own accord and no suspicious circumstances were noted. Park officials did not immediately release details as to how high up on the waterfall he jumped or whether they thought he was swimming.

The victim's name has not been released pending notification of next of kin. The investigation is on-going. No foul play is suspected.

With a warm spring under way -- temperatures Wednesday were in the 70s -- runoff into the park's streams is running high and fast and park officials are urging visitors to be cautious around water.