Waterloo Regional Police believe someone deliberately set a port-a-potty on fire in Cambridge.
Crews from Kitchener fire were called to an area of Dundas Street North and Water Street North around 11:20 a.m. Friday.
The blaze was put out but not before it spread to the wall and roof of a building causing an undisclosed amount of damage.
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No one was hurt in the fire.
Investigators say they are treating this as arson.
Anyone with information can contact Waterloo Regional Police at 519-570-9777 or Crime Stoppers at 1-800-222-8477.