An Austin man is missing in Idaho after presumably falling in the Payette River.

Dean Christianson, 43, has been missing since Friday, according to family friends.

Christianson had flown out to Cascade, Idaho, on April 23 to help Jason Koehler drive home to Austin, according to Jason’s mother, June Koehler.

Christianson and Koehler had finished a hike on Friday when Christianson went down to the river to fill up a water bottle.

When Jason checked on Christianson, he couldn’t see him anywhere, which led Jason to suspect Christianson had fallen in the river.

After a quick search, Jason flagged down authorities who immediately organized a search party, according to June.

June said Christianson is a lifelong area resident who graduated from Austin High School and lived northwest of town in rural Austin.

“He had lots of strong connections,” she said.

Authorities stopped the search for Christianson on Monday, according to June, as the water is still colder than normal and very difficult to search.