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Multiple firearms were found in a home in Riverside County after a 12-year-old middle school student allegedly threatened his classmates.

Deputies responded to a reported threat at Jurupa Middle School at 3:20 p.m. Thursday, according to the Riverside County Sheriff’s Department.

After responding to the alleged threats, an investigation at a home on the 5000 block of Baldwin Avenue in Jurupa Valley turned up three assault rifles, a handgun and several hundred rounds of ammunition, authorities said.

Deputies subsequently arrested the child on suspicion of criminal threats, as well as 42-year-old Rolando Sida Sr. on suspicion of possession of assault weapons, unsecured firearms accessible to minors and child endangerment.

No additional details were immediately made available.

If you have any information regarding this investigation, contact Deputy C. Johnson at the Jurupa Valley Station by calling 951–955–2600.