Police say it's most likely a burning cigarette started a fire at the Salvation Army in Fort Frances.
On Monday, police and the fire department responded to the fire at the building on Victoria Avenue, and extinguished the fire involving items left outside of the building.
Police say the fire happened outside of the building in an area between a walkway and a hedge on the North side of the building.
Police say a person of interest was taken into custody, but for an unrelated matter.
There have been no charges laid.