Dean Morningstar Mattinas, 27, was last seen in the early hours of March 18, 2024, leaving an elder’s home in Constance Lake First Nation, Ontario. He was later observed about 9:30 a.m. walking near the bush line along Highway 11 roughly six kilometres west of the community. Dean, a Thunder Bay resident who had a meeting scheduled there by March 20 and a flight to Sandy Lake First Nation for work, was believed to be trying to hitchhike the about 500-kilometre trip home.

He is five feet ten inches tall with an athletic build, black hair, brown eyes, a thin moustache and slight sideburns. At last sighting he wore a camouflage-patterned or beige jacket, blue jeans and brown boots, and may have been carrying a black Under Armour backpack and/or a brown backpack. Family concern grew after a March 27 Facebook message from his father went undelivered; the family reported him missing to Nishnawbe Aski Police Service and began ground searches and flyer distribution.

The Ontario Provincial Police, assisted by NAPS, have deployed Emergency Response Team members, a canine unit and aviation resources; those searches have not located him. A $50,000 reward has been offered for information. Does anyone who was in or near Constance Lake First Nation on March 18 have information about Dean’s movements or sightings that day?