A video is making rounds on the Internet showing a homeless man and woman beating another homeless man right in the Atwater metro station, as dozens of people walk by.
It's not clear when the video was taken, but it begins showing a shorter man cornering another, then kicking and pushing him.
He pushed him into a wooden barrier, the man then fell to the floor.
A woman came into the frame and stomped on the man's face.
The conflict has sparked the interest of Montreal police who say they are trying to locate the victim, to see if he wants to press charges.
Donna Varrica with Dawson College said west-end downtown has been going through tough times since the Old Forum closed its doors.
"It is a concern when you see any kind of violence," she said. "It's disturbing, you feel helpless and if you do want to help, you're sometimes over your head."
The incident took place feet away from the underground entrance to Dawson College.
Varrica, a spokesperson for Dawson, said she's noticed an increased police presence at the Atwater Metro - but there are still a high number of homeless people - many who are severely intoxicated.
Montreal police have special units in place to battle the issue in the area, with police officers patrolling on foot.
It's not clear who took the video, but towards the end, a man intervenes pushing off the assailants from beating the man on the ground.