Niagara police are investigating a suspected arson in Niagara-on-the-Lake.
Fire broke out Monday evening around 6:30 p.m. at a vacant house at 499 Concession 7 Rd.
When crews arrived, the house was engulfed in flames.
An investigation found the cause of the fire to be suspicious as it was vacant with no electricity.
Anyone with information is asked to call police or Crime Stoppers of Niagara.