Two teenagers — including a 15-year-old from Laval — have been arrested in connection with various bomb scares in recent months in Canada, the United States and Britain.
Police allege the Laval boy used a telephone or a computer to target the Carrefour Laval shopping centre in March, and the same school twice in as many days in April.
The other boy, a 16-year-old from Ottawa, is charged with committing dozens of similar crimes in Ontario, Alberta, Pennsylvania, Florida, California, Texas and Britain.
Several police forces across Canada, as well as the FBI, were involved in tracking down the teens, who apparently met online.
Authorities refer to this phenomenon as "swatting" — putting in phony calls for serious events that require a large deployment of emergency sesrvices personnel, like SWAT teams.