Screen grab of video of a fight and stabbing on campus during a graduation ceremony at Westmoor High School in Daly City. May 22, 2026.
DALY CITY, Calif. - School officials at a Daly City high school confirm a stabbing happened at Friday afternoon's graduation ceremony.
Campus stabbing
What we know:
Victor Zou, principal at Westmoor High School, issued a statement this evening that said police and emergency personnel responded immediately and remain on site.
He did not indicate the severity of the victim's injuries nor did he say if the victim was a student. No suspect information was immediately available.
The school is located at 131 Westmoor Avenue.
"At this time, we are cooperating fully with law enforcement. We understand this news is deeply upsetting for our students, families, staff, and community. Our thoughts are with all those impacted by this incident," Zou's statement read.
Videos of violence
KTVU has received videos of violence on campus from separate sources. The chaotic moments of a fight breaking out on an outdoor basketball court are captured. One video shows a person on the ground being attacked by a group and someone coming to their defense. The person who came to the defense is also attacked.
Later in the video, two people who are fighting are pulled apart. One of them appears to be bleeding profusely from their face and torso. By the end of this video, police arrive on the scene and chase people involved in the fight on foot.
Someone can be seen trying to intervene to break up the fight. There are plenty of bystanders, some are wearing their caps and gowns.
Other videos show different angles. One person in the background can be heard saying, "get these punks out of our school." Others can be heard calling for some type of security intervention.
KTVU has reached out to the Daly City Police Department for more details. We will update this story with the latest information once we learn more.
Student says man who broke into their apartment matches suspect description in fatal stabbing
Some students in the same building where a teen was fatally stabbed say a man matching the suspect's description tried breaking into their apartment weeks earlier.