Timothy A. Mason, 53, was last seen leaving his Welland, Ontario home at about 8:30 a.m. on September 14, 2009; he was known as an avid walker who frequently used local trails and off-road areas. He is described as a Caucasian male about 5 feet 1 inch with a slender build, black and grey hair and brown eyes.

On the day he disappeared he wore blue jeans, a green golf shirt, a blue sweatshirt, a distinctive red coat embroidered with the name Doug, a black Pittsburgh Penguins baseball cap and size 7 brown hiking boots. Timothy had a heart condition and is believed to have had his nitroglycerine spray with him when he left, which made his failure to return particularly worrying. The Niagara Regional Police Service opened a missing person case; few details about the search or any leads have been publicly shared.

Anyone who knew Timothy, saw him that morning, or has information about his usual walking routes in the Welland area is asked to come forward.