Updated

Two teenage boys died Sunday during a hike in the mountains east of Seattle after falling from rocks near a water fall.

A group of four teenage boys had gone hiking to Otter Falls when two of them climbed the rocks near the falls but fell about 100 feet, the King County Sheriff's office said Monday.

After the fall, one of the boys ran for help and came upon two hikers who went to the site of the accident to help. The boy continued running down the trail -- a total of five miles -- until he found a U.S. Forest Service employee.

"This is a very tragic situation," said Sheriff's Sgt. Cindi West. "There is no cell service in the area so it is likely that the Forest Service employee had to drive down the mountain to call 911."

The boy who ran was the brother of one of the boys who had fallen.

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The two hikers who went to help stayed with injured boys, built a fire and performed CPR on the two boys when they stopped breathing, West said.

By the time rescue teams reached the boys, they had died.

KOMO-TV reported Monday morning the boys' bodies had been retrieved.

The names of boys have not been released.