An investigation was underway Wednesday after an email from a student's account apparently threatened violence on the campus of Fountain Valley High School, prompting classes to be canceled for the day, police said.
The school received an email around 10 p.m. Tuesday that allegedly stated there would be explosives hidden on campus, Fountain Valley Police Department Sgt. Tony Luce said.
The email also allegedly said that any survivors would be killed with an assault rifle, according to Luce.
Police interviewed the student, who was cooperative with authorities and claimed he did not send the email.
“Police officers have gone through his email and they haven’t found evidence that it came there, but.. some computer technicians will have to go through it at a later time to help determine where that email came from exactly,” Luce said.
The student gave police his phone and computer, and officers were looking into the possibility that the email account was hacked, or that someone else had access to it.
Luce added that student did not have access to firearms.
A bomb squad was sent to check out the campus for devices as a precautionary measure, but no explosives were found on campus.
Classes were canceled for the day following the threat, the school announced on its Facebook page.
"Classes cancelled today. Due to a threat received overnight, the Fountain Valley Police Department has closed access to the school," the post stated.
The school was initially expected to remain closed for the rest of the day prior to the bomb squad's sweep of campus.
Classes would not resume Wednesday, but teacher and administrators would be allowed back onto campus.
KTLA's Feven Kiflegiorgis contributed to this report.