The following is a press release from Yellowstone National Park:
A 73-year-old man from southwest Montana died Wednesday in Yellowstone National Park after losing his footing while fishing.
The man was fishing in the Yellowstone River near the Nez Perce picnic ground in the Mud Volcano area when witnesses say he lost his footing in chest-deep water while attempting to cross the river and was carried approximately 200 yards downstream in the swift current.
Another visitor ran downstream and pulled the unconscious man ashore and initiated CPR. Park rangers and medical staff were notified and responded but were unable to revive the victim.
The cause of death remains under investigation.
"We're not sure if he had any health problems before that but, it's just unfortunate- a rock he slipped on, it looks like, and dragged him down into the river. When those waders fill up with water, they get really heavy and they're hard to get off. It's hard to get out of a situation like that so, unfortunately, it was just a terrible accident," explains Yellowstone National Park Spokesperson Dan Hottle.
His name is being withheld pending completion of notification of family members.