According to police, a staff member from another Palm Springs Unified School District school alerted authorities after spotting a social media post that threatened violence.
Two boys and a girl were taken into custody Sunday on suspicion of terrorist threats, and investigators seized two handguns and a replica AR-15 assault rifle, the Desert Hot Springs Police Department said. The suspects' names were not disclosed due to their ages.
In a message to parents, officials said security would be heightened at the campus although there is no ongoing threat to public safety.