A 15-year-old East Bay boy, possibly bullied by his peers, is in custody after making a threat to "shoot up" his high school.

The Hercules High School student was arrested on Thursday night after a teacher told police that they had heard from another student about the boy's "plans for vengeance." The boy's parents brought their son in for questioning after being contacted by the Hercules Police Department, which is when he revealed to officers that bullying may have driven him to plot the shooting. According to Bay Cities News, a subsequent search of his home turned up documents that showed his intent to shoot up his school. Police didn't comment on whether or not a weapon was also found, reports SFGate.

At school on Friday there was a noticeably stepped-up police presence on campus and rumors had spread quickly about the arrest. "They were saying that it was a sophomore going around saying that he was going to shoot up the school because he was being bullied," junior Destini Ellis told the Contra Costa Times. "I was scared. I didn't want to go to school." The school's principal made an announcement later that morning, around 10 a.m., to say that police had taken care of the situation.

The boy is currently in a juvenile detention facility in Martinez.