“I guarantee you the school will be shot up in three weeks,” the 17-year-old student allegedly said, according to Chavez who spoke at Wednesday’s press conference with the Los Angeles County Sheriff’s Department.

Chavez recalled confronting the student about his comment to which the teenager claimed he was joking. “He didn’t appear scared, but he was like, ‘Well, I didn’t mean it.’ I said, ‘I know you students say a lot of things. But you can’t be saying these words,’ ” the 26-year security veteran said of the student who police allege has an extensive disciplinary record.

Adding, “He was angry about a teacher’s issue about his earphones in class. He was not allowed to go to her class the next day so he was supposed to go the office.”