Numerous law enforcement agencies are searching for a Missouri Highway Patrol trooper and his dog who went missing Monday afternoon.

Authorities say Frederick “Fred” F. Guthrie, 46, was helping with flood fighting efforts near Big Lake and was apparently swept away by water in the area.

A spokesperson for the department could not be reached for comment.

The investigation and search continues.

Guthrie is a 17-year-veteran of the state patrol.