A fire that erupted early Sunday in Wasaga Beach is being treated as suspicious, according to investigators.

Emergency crews, including local fire services, Ontario Provincial Police, and paramedics, responded around 3:30 a.m. to a blaze at 936 Mosley Street, where the building was already fully consumed by flames upon arrival.

Officials confirmed the structure was unoccupied at the time, and no injuries occurred. The damage is considered a total loss, estimated at about $150,000.

Police say the case remains under active investigation and are asking anyone with information to come forward.