Robert Joseph Willenborg, 59, of Buena Vista, Colorado, was last seen June 12, 2016, near Glasgow, Montana after a friend reportedly dropped him off in the Park Grove area. He was described as 6 feet tall, about 190 pounds, with gray eyes, mostly bald on top with brown and gray hair at the back and sides, a mustache, and a tanned face, neck and arms.

His white pickup truck was found submerged in the Missouri River near Boy Scout Park in Valley County the day after he was reported missing. Law enforcement conducted an extensive search of the river and surrounding areas but did not recover Willenborg. Investigators believe he may have been an accidental drowning, though he remains officially classified as a missing person.

If anyone was in the Park Grove area of Glasgow on June 12, 2016, or saw a white pickup near Boy Scout Park around that time, please share what was seen or any other information that could help locate him.