York Regional Police say a fire broke out at the back of a home in Markham on Saturday morning.
Emergency crews were called to Forest Park Cresent, near Henderson Avenue and John Street, at around 8:30 a.m. Saturday for reports of a house fire.
Police said the fire spread to a neighbouring home causing significant damage as the roof may have collapsed.
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Firefighters have the fire under control and are on scene putting out hot spots, police said.
No injuries were reported.
The cause of the fire is not yet known.
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