A stabbing following a high school graduation ceremony in Daly City is under investigation after police said a 15-year-old boy allegedly wounded a 21-year-old man during a large fight on campus Friday afternoon.
Authorities said the victim suffered non-life-threatening injuries and was transported to a local hospital. Police confirmed the teenage suspect was arrested at the scene.
The incident happened shortly after a graduation ceremony at Westmoor High School.
Incident
According to the Daly City Police Department, officers responded around 4:30 p.m. to reports of an active fight involving multiple people at the school campus.
When officers arrived, they found a 21-year-old victim suffering from stab wounds.
Emergency crews provided medical aid before transporting the victim to a nearby hospital for treatment. Officials later confirmed the injuries were not considered life-threatening.
Police said a 15-year-old boy was identified as the suspected attacker and taken into custody on suspicion of assault with a deadly weapon.
Investigators also recovered the weapon believed to have been used during the stabbing, though police have not publicly described it in detail.
Campus
The incident occurred at Westmoor High School, located at 131 Westmoor Avenue in Daly City.
School officials confirmed the violence took place following the graduation ceremony, when many students, families, and guests were still gathered on campus.
Police said no other injuries related to the fight were reported.
Authorities have not publicly explained what led to the confrontation or whether the people involved knew each other before the incident.
Statement
Westmoor High School Principal Victor Zou released a statement Friday evening acknowledging the incident and confirming cooperation with law enforcement.
“At this time, we are cooperating fully with law enforcement,” the statement said.
“We understand this news is deeply upsetting for our students, families, staff, and community. Our thoughts are with all those impacted by this incident.”
The principal did not clarify whether the suspect was a student at the school or explain the victim’s connection to the graduation event.
Videos
Videos obtained by KTVU from multiple sources captured portions of the fight that unfolded on campus.
The footage reportedly showed several people fighting on an outdoor basketball court while large groups of bystanders watched nearby. Some individuals visible in the videos appeared to be wearing graduation caps and gowns.
One video showed a person on the ground being attacked by multiple people before another individual attempted to intervene.
Additional footage appeared to show a person bleeding heavily while others tried to separate individuals involved in the altercation.
Police officers were later seen arriving at the campus and pursuing people involved in the fight on foot.
Witnesses in the videos could also be heard calling for security intervention during the disturbance.
Investigation
The Daly City Police Department continues investigating the circumstances surrounding the stabbing and the larger fight.
Officials have not announced whether additional arrests are expected.
Investigators are reviewing witness statements, videos from the scene, and physical evidence recovered during the response.
Below is a summary of confirmed details released by authorities:
| Detail | Information |
|---|---|
| Location | Westmoor High School |
| Date | Friday afternoon |
| Victim | 21-year-old man |
| Suspect | 15-year-old boy |
| Injuries | Non-life-threatening |
| Charge | Assault with a deadly weapon |
Police are asking anyone with additional information about the incident to contact the Daly City Police Department at 650-991-8169.
Community
The incident has raised concerns among parents and community members about safety during large school events.
Graduation ceremonies often bring together students, families, and visitors from outside the school community, creating challenges for event security and crowd management.
School officials have not announced whether additional security measures will be reviewed following Friday’s violence.
The investigation remains active as police work to determine what led to the confrontation and stabbing.
FAQs
Where did the Daly City stabbing happen?
It happened at Westmoor High School.
How old was the stabbing suspect?
Police said the suspect is 15 years old.
Was the victim seriously injured?
Police said the injuries were not life-threatening.
Did police recover the weapon?
Yes, officers recovered the weapon at the scene.
Is the investigation still active?
Yes, Daly City police continue investigating.
