On Sunday morning, firefighters arrived at a home on Sunny Bank Street in Gaspé after receiving a 911 call at about 1:50 a.m.
The body of the victim was found in the debris. The man, 78, lived alone in the residence.
His remains have been sent to a Montreal forensic laboratory for identification.
Preliminary findings suggest the fire was accidental, but officials with the Sûreté du Québec are on the scene investigating the exact cause of the fire.