Nine killed, several injured after shooting in Russian school

According to initial reports, two teenagers opened fire at the secondary school. One was arrested on the scene, while the other is still at large. The arrested is 17 years old.

At least six of the nine killed were children, the report added.

A teacher also died in the incident.

Pupils described scenes of chaos as the sound of an explosion "thundered" through corridors, followed by gunshots as the killers went from room to room.

Kazan is in the mainly Muslim republic of Tatarstan.

Police and emergency services are at work at the site, with the regional head also reportedly having arrived to personally control the investigation.

Moreover, all schools in the region were put on alert after the incident.