Youth charged after assault at high school
We have charged a 17-year-old male after an assault yesterday that resulted in a northeast high school going into lockdown.
At around 12:05 p.m. yesterday, Thursday, June 18, 2026, police were called for reports of an ongoing incident at Lester B. Pearson High School, located in the 3000 block of 52 Street N.E. It was reported that a youth armed with a knife was smashing property, threating students and staff and had attempted to stab a student. The school was placed on lockdown as multiple calls continued to come in reporting the suspect’s movements within the school.
Officers immediately flooded the area and within minutes entered the school, located the suspect and took him into custody. The lockdown remained in place as our officers continued to ensure the safety of students and staff as they assessed each room and area of the school.
One student received minor injuries as a result of the assault and did not require transport to the hospital.
The lockdown was released once our officers confirmed there were no additional victims or active threats to the staff or students.
Investigators believe the attack was premeditated.
As a result, one 17-year-old male, a former student of Lester B. Pearson High School, has been charged with:
- One count of attempted murder
- One count of uttering threats
- One count of mischief to property under $5,000
He will next appear in court on Monday, June 22, 2026.
The youth cannot be named under the provisions of the Youth Criminal Justice Act.
“Our officers responded within minutes and acted decisively to ensure the safety of every student and staff member. Thanks to their quick actions, the suspect was taken into custody without further harm,” says Calgary Police Service Staff Sgt. Mike Sushelnitsky. “Incidents like this highlight just how important lockdown drills are. The preparedness of students and staff may well have saved lives.”
We are working closely with our partners at the Calgary Board of Education to offer supports and resources to the students and staff at Lester B. Pearson. In addition to the supports offered within the school, our Victim Assistance Support Team (VAST) is a free service offered to victims and witnesses of crime or tragedy. If you or if someone you know is in need of support, the Victim Assistance Support Team (VAST) is here to help. VAST: 403-428-8398
Anyone with information about this incident is asked to contact police by calling 403-266-1234. Tips can also be submitted anonymously to Crime Stoppers through any of the following methods:
TALK: 1-800-222-8477
TYPE: www.calgarycrimestoppers.org
APP: P3 Tips
Case # CA26267947/4794