Two 15-year-old girls were arrested in an alleged mass shooting plot targeting Corona High School in Riverside County, police officials confirmed on Wednesday, October 21, 2026. Officials said the teens arrested in connection with the mass shooting plot may have sought revenge.
The Federal Bureau of Investigation (FBI) warned the Corona Police Department on October 6 about online social media conversations regarding a threat to Corona High School, which led to the arrest of the teenagers, according to a statement released by the department on Wednesday, October 21.
The teenagers allegedly spent months researching previous school shootings, investigating how to obtain firearms, and discussing how they would enter the campus to carry out the attack. They were reportedly meticulous in their planning, documenting their intentions and logistics.
"They were trying to make specific plans as to how they were going to carry out this revenge-based attack," revealed Corona Police Department Lt. Robert Montanez to a local TV station, KTLA 5 News. The authorities acted swiftly once the threat was identified to ensure the safety of the student body.
Both teens are currently held on suspicion of conspiracy to commit murder, as the Riverside County District Attorney's office reviews the case to determine formal charges. The gravity of the situation has prompted a wider discussion on school safety protocols in the region.
The FBI, the Riverside County Sheriff's Office, and the Corona-Norco Unified School District are coordinating the ongoing investigation. Officials have emphasized that there is no longer an active threat to the school campus.
Community leaders and school administrators have expressed relief that the plot was intercepted before any violence could occur. Counseling services are being made available to students and staff who may be affected by the news of the thwarted attack.
The incident highlights the critical role of digital monitoring in modern law enforcement. By tracking social media threats, agencies are increasingly able to intervene before physical harm is inflicted on educational institutions.
As the legal process moves forward, the focus remains on understanding the motivations behind the girls' actions. The case serves as a stark reminder of the persistent challenges regarding youth violence and the necessity of proactive community vigilance.
Further updates are expected as the Riverside County District Attorney's office concludes its review. For now, the Corona-Norco Unified School District has increased security measures as a precautionary step to reassure parents and students.