Olivier St-Denis, 47, of Malartic in the Abitibi-Témiscamingue region, was last seen on September 10, 2023. Witnesses placed him walking along Route 117 near kilometer marker 543 and later on Laurier Street in Malartic. He has had no known contact since that day, and his family is reported to be worried about his health and safety.

At the time he went missing he was described as a Caucasian male, 5 feet 8 inches tall, about 165 pounds, with brown hair and brown eyes. He was believed to be wearing beige or dark cargo pants, a khaki checkered shirt and green and grey Merrell shoes; he may also have been wearing a jean jacket with a black hood. The Sûreté du Québec has been investigating and planned a mobile command post in Malartic on the one-year mark after his disappearance to seek new leads.

If anyone in the Malartic area saw Olivier around September 10, 2023 or has information about his whereabouts, please come forward to the Sûreté du Québec.