Windsor police's Arson Unit is now involved in the investigation of a fire early Tuesday morning.
Officers responded just before 2 a.m. to a residential construction site on Cadillac Street and Alice Street. Firefighters arrived and put out the fire, which started on a skid steer.
No one was hurt, and the damage was estimated at $30,000.
Investigators say the fire is suspicious.
Residents and business owners are being asked to check any surveillance camera footage from Tuesday between midnight and 1:30 a.m.