A fire at a fire hall in Norfolk County is being treated as suspicious.

Norfolk County OPP say the fire occurred sometime during the 5 a.m. hour Sunday at the Waterford fire hall.

The building was empty at the time because firefighters were responding to a call.

According to police, a number of flyers were placed on a window and lit on fire. Damage from the fire was contained to the window.

Anyone with information about the fire is asked to contact police or Crime Stoppers.