The Kenora OPP remain on the scene of a house fire on Kagaki Lake Road in the Township of Sioux Narrows-Nestor Falls.
Police and the Nestor Falls Fire Department were called just after 7 p.m. on Tuesday.
When they arrived, the building was engulfed in flames.
Firefighters located a body within the home.
A post-mortem examination was to be conducted in Kenora today.
The identification of the victim was being withheld pending notification of next-of-kin.
The scene was held until the arrival of the Ontario Fire Marshal yesterday.
The investigation is continuing with the assistance of the Northwest Region Crime Unit and the Kenora Forensic Identification Unit.