The Burlington Fire Department says a blaze in a rural shed on Sunday afternoon likely started as a result of some uncooled ash in a chimney.
A city spokesperson says about 10 trucks and 30 firefighters were called to the scene just after 2:30 p.m. to a garage on Britannia Road.
Investigators say the structure suffered an estimated $150,000 of damage.
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No one was hurt in the fire.