MONTREAL -- A man is in critical condition after being struck with at least one bullet during an early-morning confrontation with Montreal police.

The province's police oversight agency says officers were called to intervene in a fight outside a bar at about 3 a.m. Saturday.

According to preliminary information, investigators believe the officers pursued the man when they saw he was carrying a gun.

They say the suspect turned and shot in the direction of the officers, who returned fire.

The independent investigations agency is called to investigate when a civilian is killed or injured during a police intervention. Provincial police were also on site Saturday morning to provide support.