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A shooting that erupted behind a restaurant in Canada early Monday left six people wounded, including one with life-threatening injuries, authorities said.

The shooting happened around 1:20 a.m. on Harwood Avenue South near Highway 401 in Ajax, a town in southern Ontario, Durham Regional Police said.

Investigators said the suspect or suspects sped away from the scene in a vehicle. 

No descriptions of any suspected individuals or the vehicle were immediately available.

Forensic investigators were on scene collecting evidence.

Police standing at scene of shooting in Ajax

The shooting unfolded behind a restaurant in Ajax, Ontario, around 1:20 a.m., police said. (Durham Regional Police )

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Authorities said investigators were expected to provide an update later Monday morning.