Authorities have revealed details about the suspect in one of the country's deadliest mass shootings, which took place at a school in British Columbia. The young woman also shot and killed her mother and brother.

The Royal Canadian Mounted Police said more than 25 people are injured, including two with life-threatening injuries, after the shooting at Tumbler Ridge Secondary School.

The shooting occurred at a high school in Tumbler Ridge, in Canada's province of British Columbia, police said.