A young man in Nakhodka, Russia, killed his girlfriend in a school principal’s office, and then committed suicide.

The incident occurred on Friday.

The youth entered one of the city’s schools and started to settle scores with his 15-year-old girlfriend.

The police arrived at the scene, but the boy burst into the principal’s office where the girl was, killed her with a knife, and then committed suicide. 

A criminal case is launched on murder charges.

Several investigations are conducted, according to Lenta.ru, a Moscow-based online newspaper.