The National Park Service reported Thursday that two people have died in separate incidents in the park this week.

On Wednesday afternoon, a 73-year-old angler from southwest Montana died when he lost his footing while fishing in the Yellowstone River.

The man, whose name is being withheld pending family notification, was fishing near the Nez Perce picnic ground in the Mud Volcano area. Witnesses said he lost his footing in chest-deep water while crossing the river and was carried 200 yards downstream.

Another visitor ran downstream, pulled the unconscious man out of the stream and began CPR. Park rangers and medical staff were unable to revive the man.

Another man died while hiking in the northeastern portion of the park this week.

Searchers on Thursday morning found the body of Joseph Austin Parker, 23, just below the summit of Electric Peak.

Parker had gone for a solo hike Tuesday and failed to return. He was last heard from via cellphone around 2:30 p.m. Tuesday. He told his friends he was below the summit of Electric Peak but, because of nearby lightning, the hiker said at the time that he was heading back down the mountain.

He was reported missing around 7:30 p.m. that night.

A ground and aerial search Wednesday turned up no clues, but his body was found below the summit of Electric Peak shortly after the search resumed Thursday morning.

Parker was originally from Valdosta, Ga., and was working at a business in Gardiner.

Electric Peak is a nearly 11,000-foot mountain in the Gallatin Range west of Gardiner.

The cause of both park deaths are under investigation.