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Search for 74-year-old man missing in Yellowstone continues by foot, helicopter and boat

East shorline of Shoshone Lake (NPS / Jacob W. Frank)

CASPER, Wyo. — Yellowstone National Park said on Wednesday that search efforts continue for Kim Crumbo, 74, after he was reported as missing on Sunday.

Crumbo’s half-brother Mark O’Neill, 67, was found dead along the east shore of Shoshone Lake in Yellowstone on Monday morning. Crumbo and O’Neill had been on a backcountry trip in Yellowstone and a family member reported the two as overdue on Sunday.

Yellowstone said that search efforts will include support from searchers on foot, by helicopter and by boat. The park said the search efforts will continue for several days as conditions warrant.

Park crews located a vacant campsite with gear on the southside of the lake on Sunday along with a canoe, paddle, personal flotation device and other belongings on the east shore of the lake.

The park said that the incident remains under investigation. The park said that it couldn’t comment on specifics of the investigation, but that updates will be provided when deemed appropriate.

“We ask the public to maintain distance from any law enforcement personnel, equipment, vehicles and their related activity for the safety of the public in this remote area and to protect the integrity of our work,” Yellowstone said.

Crumbo is a former Navy Seal. Both he and O’Neill formerly worked for the National Park Service. O’Neill was from Chimacum, Washington, while Crumbo is from Ogden, Utah.