The threat shows consistencies with "swatting", according to a Thursday news release from Essex Police.
Officials say Essex High School was deemed safe after a lockdown caused by a threat. The police department received a call around 1:40 p.m. regarding a male suspect who said he was a student at the school.
The search of school grounds came up clear, Beaulieu said, and a closer analysis of the call and the comments the caller made in the original call led police towards the swatting theory.
It "very possibly" could have been a hoax, Hallinan said.
The schools had been in lockdown for much of the day.
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Schools were scheduled to run as normal on today. The teenagers were taken off campus one classroom at a time.
Sheriff's deputies sent over a helicopter and the bomb squad officers to assist Irvine police, sheriff's Lt.
The students at Canyon View have been released to their parents, Hallinan said.
We also reached out to Essex School Superintendent Judith DeNova to ask about the internal handlings throughout this situation; she declined multiple requests for an interview. No weapon was found. The lockdown was lifted just before 5 p.m. and teachers were allowed back into the building. The school located at 4515 Portola Parkway, has about 2,000 students.