The incident happened at about 3:15 a.m. near the intersection of Elmhurst Avenue and St-Jacques Street.
Police said when they arrived on the scene, the victims had already left.
Officers tracked down three men in their 20s a short while later.
Police said none of the victims pressed charges and their injuries were not life-threatening.
According to police, the men involved are not co-operating with the investigation and it’s difficult to know what happened.
Officers said the victims are known to police.