Martin Stocker was 63 when he was last seen at about 1:00 p.m. on March 6, 1991, at his retirement home in Toronto, Ontario. He is described as a white male, 70 inches tall, 161 pounds, with blue eyes, brown hair and discoloured lower legs. At the time he disappeared he wore a green army-style canvas coat, beige or brown army-style pants and shirt, black leather boots, and carried a beige canvas backpack.

The Toronto Police Service Missing Persons Unit opened an investigation but the trail went cold. No immediate signs of foul play were reported and there is no clear indication where he may have been headed or why he left. The case file has remained open and his whereabouts are still unknown.

If anyone saw Martin Stocker on or after March 6, 1991, or recognizes the clothing and backpack described, please come forward with information that could help locate him.