BARRIE -- A 53-year-old man is suffering life-threatening injuries after a stabbing in Midland on Tuesday morning, police say.

Officers responded to a report of a stabbing on Frederick Street around 8:30 a.m. and said several people were seen leaving in a vehicle.

Police say the victim did not live in the unit where the incident took place.

Police say they arrested three men and three women in Port McNicoll in connection with the investigation.

The identities of the accused individuals and the victim have not been released.