Big River RCMP is asking for help to locate Terry Costain.
The 66-year-old was last seen driving a black Dodge Ram truck in the Big River/Debden area on Dec. 29 around 5:30 p.m.
According to RCMP, that truck was found abandoned near Eldred Road north of Debden.
Costain is a Caucasian man, six feet three inches tall with a slim build, and grey shoulder-length hair.
He was last seen wearing blue jeans, a blue jean jacket and a blue toque.
Anyone with information on the whereabouts of Costain is asked to contact Big River RCMP 306-469-2590 or Crime Stoppers at 1-800-222-8477.