David Nettleton (pictured) was last seen on Friday (March 1) about 12:35 p.m. He may be operating a 2001 Ford F150 truck, gray in colour, with an Ontario licence plate: AB11267.
Nettleton is described as 6-foot tall, 200 pounds, slim build, white hair and hazel eyes. He has a dimple on his chin.
He was last seen wearing blue jeans, a black golf shirt, brown work boots, and a black windbreaker with a fleece collar.
Police are asking anyone with information as to his whereabouts to call (519) 344-8861.