Windsor fire officials are continuing to determine the cause of an overnight fire on the west end.
Emergency crews were called just before midnight Thursday to a convenience store on Prince Road near Glenfield Street.
A private residence is on the second floor. Four people are now looking for a place to stay.
Windsor Fire and Rescue reports that the fire originated in the building's basement.
Damage is estimated at $400,000.
A Windsor fire investigator remained on scene as the cause was still being determined.
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