Police in Harrison Township, Gloucester County say a 14-year-old student has been arrested for allegedly threatening to bomb a school.

The incident happened Monday at Clearview Regional Middle School.

According to police, an off-duty police officer found a note in the lobby bathroom saying, “IM Bringing a bomb Tommorow," in the lobby bathroom.

The police officer then alerted the school.

Authorities swept the school and no explosives were found.

School officials are crediting security system upgrades, as well as the quick-thinking police officer, for the arrest.