Los Angeles

Rialto Community on Edge as Three High Schools Face Lockdowns Within Two Days

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Published on September 30, 2025
Rialto Community on Edge as Three High Schools Face Lockdowns Within Two DaysSource: Unsplash/Scott Rodgerson

As the Rialto Unified School District grapples with a string of school lockdowns, concerns among parents and the community at large continue to escalate. For the third time in two consecutive days, a Rialto high school was compelled to undergo a lockdown procedure. Following Monday's incident at Rialto High School due to a reported threat of an active shooter, Carter High School found itself under a similar lockdown on Tuesday, with no immediate explanation from district officials as to the cause, as reported by NBC Los Angeles.

Shortly after Carter High School's lockdown, Eisenhower High School also underwent a precautionary lockdown, which was lifted approximately 30 minutes later, the Rialto Unified School District announced without clarity on what spurred the series of lockdowns or if there was any link between the three instances, which had already put Rialto High School on high alert the previous day, this according to detailed coverage on KTLA. In the first of these incidents, Rialto Police confirmed no active shooter, no shots fired, and no weapons were found on Monday at Rialto High School, as students were eventually released to their parents and guardians in an orderly fashion.

During the Rialto High School incident, the authorities' response was swift after a call at 12:44 p.m. reported the threat involving weapons and possible explosives, leading to a thorough search by several armed officers captured in video footage by local media; no such dangerous items were uncovered, according to ABC7. One student was detained as a person of interest concerning the threats, and despite the lack of physical harm toward the majority, two minor injuries did occur during the evacuation—one student suffered an asthma attack, and another fell during the commotion.

Rialto High School's lockdown was triggered specifically after receiving threats of an active shooter situation, which subsequently led to the detention of an individual. San Bernardino Police reported that all classrooms were cleared by 2:21 p.m. without identifying any shooter or locating any weapons on campus, reiterating the details shared by CBS News. The Rialto police affirm their commitment to work closely with the Rialto Unified School District to navigate this period of heightened tension.