The cause of a fire in Wasaga Beach is under investigation by the OPP.
Deputy Fire Chief Craig Williams says 30 firefighters responded to a blaze at an unoccupied home, undergoing extensive renovations, on River Road East yesterday afternoon.
Williams says witnesses report seeing several youths leaving the house before the fire.
The fire is being treated as an arson.
The Ontario Fire Marshal has been notified and the OPP continue to investigate the incident.