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San Mateo, CA Police Department
Friday May 22nd, 2026 :: 03:23 p.m. PDT

Advisory

Aragon High School Secure Campus has been lifted. There is no active threat to the school or the surrounding community.

On 05/22/2026, approximately 1:16 P.M., Aragon students became involved in an altercation that started on campus and moved to Alameda De Las Pulgas in front of the school. SMPD Officers arrived on scene and determined there was no active threat at the school or the surrounding community. Out of an abundance of caution, the school was placed on Secure Campus while officers investigate, which has now been lifted. Thank you for your patience and cooperation. 

Address/Location
San Mateo, CA Police Department
200 Franklin Pkwy
San Mateo, CA 94403

Contact
Emergency: 9-1-1
Non-emergencies: 650-522-7700

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