Police say an eighth-grade student at the Joseph R. Bolger Middle School is in custody in connection to a bomb threat at the school.The threat was found three weeks ago at the school and said a bomb would go off Feb. 20.Authorities executed a search of the school the day the threat was found and found nothing. Bomb-sniffing dogs searched the school early Friday morning. Anyone entering the building also had their bags searched. Police said they would have an officer at each school in Keansburg as a precaution and all after-school activities scheduled for Friday were canceled.