BREAKING NEWS:

An Ensign Intermediate School student was arrested Tuesday after bringing a bomb on campus, police said.

Newport Beach police took the 12-year-old into custody on suspicion of possession of an explosive device after a bomb squad found materials for an “acid bomb,” which is capable of a 300-foot blast radius, on the student and in his locker, said Sgt. Evan Sailor.

The campus was in lockdown for more than an hour after a fellow student reported a suspicious package about 11:15 a.m., Sailor said. Students were eventually evacuated to the campus field. After the materials were found and confiscated, students were sent back to class.

Parents had not been officially notified as of 1:30 p.m., but dozens gathered at the school after receiving cell phone calls from their children.