DATE: October 05, 2026, at 2:30 p.m.
INCIDENT: Swatting Incident at Grand Terrace High School
LOCATION: 21800 Block of Main St., Grand Terrace
SUSPECT(S): Unknown
SUMMARY: Grand Terrace High School was placed on a precautionary lockdown following an anonymous threat made toward the campus. Deputies, with assistance from local law enforcement agencies, searched the campus and determined the school was safe.
On October 5, 2026, at approximately 2:30 p.m., an anonymous caller reported that destructive devices had been placed at Grand Terrace High School. In response, school administrators immediately placed the campus on lockdown as a precaution to protect students and staff.
Deputies responded to the school along with law enforcement partners from the Riverside Police Department, Ontario Police Department, Redlands Police Department, and Riverside County Sheriff’s Department. Together, they conducted a thorough search of the campus.
No suspicious items, weapons, or destructive devices were located during the search, and investigators found no evidence of a credible threat to the campus. The incident remains under investigation.
The lockdown was lifted at approximately 5:30 p.m. Deputies remained on campus to assist with a safe and orderly student dismissal and pickup.
The safety of our students, staff, and community remains our highest priority. We encourage students, parents, staff, and community members to remain vigilant and report anything suspicious or concerning to law enforcement or school officials. If you see something, say something. Quick reporting can help keep our schools and communities safe.
Anyone with information regarding this incident is urged to contact the Central Station at (909) 387-3545. Callers wishing to remain anonymous should call or text REPORT to We-Tip at 844-909-3006. Online reporting is also available at: https://mobile.catapultems.com/sbcsd/Site
Refer: School Resource Deputy Nicholas Vaca
Station: Central Station
Phone No. (909) 387-3545
Case No. 122600810
SHANNON D. DICUS, Sheriff-Coroner
San Bernardino County Sheriff-Coroner Department
