Four people were killed and at least two wounded when a gunman opened fire at a high school and a second location in the Canadian province of Saskatchewan, officials said.
A male suspect was in custody but officials have not yet given a motivation for Friday’s shooting in La Loche, an aboriginal community 600km north of the city of Saskatoon.
Initial reports said five people were killed.
Royal Canadian Mounted Police Chief Supt. Maureen Levy said authorities had seized the suspect’s gun.
“There are four individuals deceased as a result of this tragedy and there are other injuries and they’re being treated by health care professionals at this time,” she told reporters.
“I can tell you that we have one male in custody. Public safety is no longer at risk and we have secured the firearm.”
Canadian Prime Minister Justin Trudeau, speaking from the annual World Economic Forum in Davos, Switzerland, said what had happened was “every parent’s worst nightmare”.
He added: “The community is reeling.”
On its Facebook page, the school urged the public to stay away while the incident was handled by police.
While the United States faces a disproportionate amount of mass gun violence compared with Canada, America’s northern neighbour has not escaped the tragedy of school shootings.
In 1989, 14 women were killed by shooter Marc Lépine at the École Polytechnique in Montreal before he killed himself. The massacre shocked the nation and galvanized the Canadian public against gun violence and is marked annually with a national day of remembrance.
In 1999, just eight days after Colorado’s Columbine high school massacre, 14-year-old gunman Todd Cameron Smith killed 17-year-old Jason Lang at W.R. Myers high school in Alberta.
And in 2006, 18-year-old student Anastasia De Sousa was killed and 19 people injured when 25-year-old Kimveer Gill opened fire at Montreal’s Dawson College. Gill killed himself after being shot by police.