Investigators say a fire that burned a building and injured a business owner in Windham is arson.
The State Fire Marshal's Office made the ruling Friday night after fire broke out in the afternoon in the middle of three units next to Corsetti's in Windham on Gray Road.
The owner of the property, Donato Corsetti, suffered minor injuries, along with a firefighter who suffered a knee injury.
Investigators say they still need to interview witnesses to find who was responsible.