A shooting at a secondary school in Tumbler Ridge, British Columbia, left ten people dead, including the suspected female gunman, in one of the deadliest mass casualty events in recent Canadian history
Police said “around 10 people” were killed, in what has been called the worst mass shooting in the history of Sweden. The suspected perpetrator is among the dead.
In the growing field of threat assessment, professionals say there is a way to stop perpetrators long before they pick up guns.