Officials tell the Omaha World-Herald that the boy was upset that the 15-year-old girl had broken off their relationship. Police say he ambushed the girl Tuesday afternoon in a Burke High School hallway when she left class to go to the bathroom. Investigators say she ran after he stabbed her once, but he chased her down and stabbed her several more times before trying to slash his own throat.
A school resource officer responded, taking the knife and administering first aid to both teens, who remain hospitalized in serious condition. Both are expected to survive.
The stabbing led to a school lockdown that lasted about two hours.