Despite Canada's relatively strict gun controls, there are still occasional shootings at schools, universities and colleges in the country.
Friday afternoon, at least four people were killed in a shooting that involved a school in the small Saskatchewan community of La Loche. Two more people have been critically injured in the shooting.
Here's a list of other deadly school shootings that have happened in Canada.
2013: Les Racines de vie Montessori, Gatineau, Que.
On April 5, 2013, two men died during a shooting at the school's daycare. The shooter was identified as Robert Charron. Thirty-eight-year-old Neil Galliou was killed before Charron took his own life. Charron told staff to take the 53 children to safety before he opened fire.
2012: University of Alberta, Edmonton
Travis Baumgartner shot four of his co-workers — three fatally — in a robbery on the university campus on June 15, 2012. After pleading guilty, he was sentenced in 2013 to 40 years in prison with no chance of parole.
2007: C.W. Jeffries, Toronto
Jordan Manners, 15, died after being shot at his north-end Toronto school, C.W. Jeffries. Manners was a Grade 9 student.
Two men were charged with first-degree murder in the death. They were referred to only as C.D. and J. W. because they were 17 years old at the time Manners was slain. After two trials, the two men were ultimately found not guilty.
2006: Dawson College, Montreal
One woman was killed after a shooting rampage at the Montreal CEGEP on Sept. 13, 2006. Another 19 people were injured — several seriously — in the shooting. The shooter, 25-year-old Kimveer Gill, shot himself after a shootout began with police at the college.
2004: Bramalea Secondary School, Brampton, Ont.
A 47-year-old teacher at the school, Aysegul Candir, was shot and killed by her husband, 62-year-old Erhun Candir , in the parking lot of the Brampton, Ont., school in 2004. No students were harmed and it was deemed a domestic dispute by police.
Candir was found guilty of first-degree murder and was sentenced to life in prison in 2007.
1999: W.R. Myers High School, Taber, Alta.
A 14-year-old boy opened fire inside the W.R. Myers High School in Taber, Alta., on April 28, 1999.
The shooting left 17-year-old student Jason Lang dead and another student was seriously injured. The shooter, who could not be identified because of his age, was sentenced to three years in secure custody, and another seven years of probation.
- TIMELINE | Tragedy in Taber
1992: Concordia University, Montreal
Prof. Valery Fabrikant fired on his colleagues on Aug. 24, 1992. He killed four people and wounded one more.
1989: L'Ecole Polytechnique, Montreal
Fourteen female students and a college employee were killed, and another 13 were injured In the worst school shooting in Canada's history.
On Dec. 6, 1989, Marc Lepine, 25, walked into a classroom in the school with a gun and separated the men and the women, telling the men to leave. He opened fire in the classroom, and then wandered the hallways of the school, committing suicide shortly after his rampage.
1978: Sturgeon Creek School, Winnipeg
A 17-year-old student shot and killed a 16-year-old student at the Winnipeg high school on Oct. 19, 1978.
1975: Saint Pius X, Ottawa
An 18-year-old student, Robert Poulin, opened fire on his classmates on Oct. 27, 1975, killing two people and wounding four more before killing himself. He had also raped and killed a 17-year-old girl prior to the shooting.
1975: Brampton Centennial Secondary School, Ontario
A 16-year-old student, Michael Slobodian, killed two people and wounded 13 others before killing himself.