Thousands of students at an Irvine high school were being evacuated after a man phoned in a hoax, saying he locked himself in a bathroom and threatened that he had guns and explosives, according to police.
Northwood High on 4515 Portola Parkway was being evacuated after the phone call came in at 1:45 p.m.
After Irvine police methodically searched the campus and found nothing, they deemed the threat a hoax.
The man called the desk claiming to have guns and explosives in a school bathroom, police said.
A reunification point for parents and students was set up at Portola Parkway and Yale Avenue.
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Parents were asked to stay off campus as the investigation continued.
There were an estimated 2,300 to 2,500 students being evacuated from campus amid the hoax, as police said they were acting out of an abundance of caution.
The school was deemed safe at 5 p.m.
The school said the students had just returned from spring break.