Granite Hills High School Lockdown EL CAJON, California (Feb. 10, 2026) — Law enforcement and school officials responded to a threatening phone call today that temporarily placed Granite Hills High School on heightened security status, prompting a police sweep of the campus and concern among students, staff and parents. Authorities confirmed no injuries or suspects at this time.
Officials with the El Cajon Police Department were dispatched to the Grossmont Union High School District campus after a threatening phone call was received earlier this afternoon, according to an update on the department’s social media. Officers conducted a thorough search of the school grounds and reported finding “nothing unusual,” though they remained on site as a precaution.
Granite Hills High School was placed on what district officials describe as a “secure campus” status — a safety protocol in which exterior doors are locked and classes continue behind secured entrances while authorities investigate a potential threat. This measure is distinct from a full lockdown, allowing normal instruction to continue inside classrooms while restricting movement and access to the campus.
Parents and guardians were notified through school communication channels as officers swept hallways, classrooms and common areas to ensure there was no immediate danger to students or staff. School leaders emphasized that the precaution reflected longstanding district safety procedures, noting that secure‑campus protocols are activated in response to reported threats or nearby police activity.
The El Cajon Police Department reiterated that no alarming devices, threats or suspects were located during the search. Officers remained on campus into the evening “out of an abundance of caution,” according to the department’s update.
Granite Hills High School has experienced serious safety incidents in the past, including a 2001 shooting, and district officials have implemented emergency planning and resource officer programs to help safeguard students and staff.
Authorities ask that anyone with information about the threat call contact the El Cajon Police Department; school officials continue to work closely with law enforcement as the investigation proceeds.
This is a developing situation; further details will be reported as they become available.
