Support for LAist comes from
We Explain L.A.
Stay Connected

Share This

This is an archival story that predates current editorial management.

This archival content was written, edited, and published prior to LAist's acquisition by its current owner, Southern California Public Radio ("SCPR"). Content, such as language choice and subject matter, in archival articles therefore may not align with SCPR's current editorial standards. To learn more about those standards and why we make this distinction, please click here.


Classes To Resume at Mt. SAC After Bomb Evacuation, Lockdown at Walnut HS

Stories like these are only possible with your help!
You have the power to keep local news strong for the coming months. Your financial support today keeps our reporters ready to meet the needs of our city. Thank you for investing in your community.

A community college in northeast Los Angeles County was evacuated and a nearby high school put on lockdown Thursday morning after multiple bomb threats were made to both campuses.

According to the Los Angeles Sheriff’s Dept., a note was found in a bathroom at Walnut High School at around 10:20 a.m. containing a message stating a bomb would go off on the campus and at Mt. San Antonio College about a mile away. The note warned the bomb would go off at 2:45 p.m. at both sites, the San Gabriel Valley Tribune reports.

Walnut High was put on lockdown before the “all clear” was called at 12:40 p.m., the LASD stated. Students were let go at 1:20 p.m.

Support for LAist comes from

Mt. SAC also received a bomb threat and was evacuated after the school, which is down the street from Cal Poly Pomona, sent out an emergency alert.

Classes had been cancelled until at least 4:30 p.m., but the "all clear" was given at around 3:30 p.m.