Shots were fired at Montreal's Dawson College. It's unclear who was doing the shooting, who got shot, and why. CBC has ongoing coverage of the story:
Eyewitnesses say they saw a tall skinny man, wearing a black trenchcoat and a mohawk haircut, walk into the cafeteria carrying a large gun. He apparently fired several shots…
Montreal police confirm that there is at least one suspect they say has been "neutralised." Television images showed police officers dragging a bloody body out of the main doors of the building.
(Thanks, Mike!)
Update: Montreal Metroblogging has a first-hand account of the shootings.