Incident: Rialto Police Department Responds to a Telephonic Threat at Carter High School
Date / Time: September 30, 2025 / 10:20 a.m.
Location: Carter High School 2630 N. Linden Ave. Rialto, CA 92376
This morning at approximately 10:20 a.m., the San Bernardino County Sheriff’s Department Communication’s Center received a report of an armed individual at Carter High School. The call was immediately transferred to the Rialto Police Department.
The School Resource Officer assigned to Carter High School quickly placed the campus on lockdown while Rialto officers, supported by surrounding law enforcement agencies, responded and conducted a systematic search of the school. After a thorough sweep of the campus, no armed individual was located and the lockdown was lifted.
This incident follows a similar call yesterday regarding an alleged armed subject at Rialto High School, which falls under the jurisdiction of the San Bernardino Police Department. That report was also determined to be unfounded.
At this time, investigators believe these incidents to be acts of “swatting,” in which false emergency calls are made to provoke a large law enforcement response. While no credible threat has been identified to our community, the Rialto Police Department treats all such calls with the highest level of seriousness to ensure the safety of our students, staff, and residents.
We want to reassure the community that there is no ongoing threat. However, filing a false police emergency report is a crime under California law, and those responsible for these incidents will be investigated and held accountable.
The Rialto Police Department remains committed to working closely with our schools, regional partners, and the community to ensure public safety.
Anyone with information related to this incident is urged to contact the Rialto Police Department at (909) 820-2550. Witnesses can also anonymously report information through WeTip at (800) 782-7463.
Media inquiries related to this case can be directed to Rialto Police Captain Lamont Quarker at (909) 820-2634 or LQUARKER@RIALTOPD.COM