Toronto police and fire officials have launched an arson investigation after discovering a pair of dumpsters was set on fire overnight Saturday.

Toronto Fire Capt. Adrian Ratushniak said they received a call at midnight Saturday for two dumpsters on fire behind a building at 96 Orfus Road, southwest of Yorkdale Shopping Centre.

While firefighters attempted to put out the dumpsters they noticed an attempted fire in a dumpster nearby at 88 Orfus Road.

No suspects have been identified in the investigation.