The Windsor Police Service has taken over the investigation following a house fire in Walkerville.
Crews were called to the 200-block of Louis Ave just after midnight Tuesday morning.
It took firefighters about an hour to knock down the blaze.
No injuries are reported while damage is estimated at $125,000.
The cause remains unknown and, according to Windsor fire officials, city police are now investigating.
Anyone with information about the incident is asked to contact Windsor police or Crime Stoppers.