From
CNN:
A gunman was killed by police and 20 students were wounded after a Wednesday shooting at Dawson College in downtown Montreal, police said.
Initial reports indicated that as many as four people, including two gunmen, had been killed, but Yvan Delorme, chief of Montreal Police Services, said only the single gunman was killed. Police were looking for other possible suspects, he said.
Delorme would not comment on a motive, but said the shootings were not hate crimes or terror-related.
The gunman sounded like a very disturbed young person. It truly boggles my mind how this kind of violence can be rationalized in the criminal's brain.