Footage also showed emergency service vehicles parked outside the school, with people running towards the building.

It was not clear whether any other shooters remained at large. Nor was it immediately clear what the motive for the attack was.

School shootings are rare in Russia. One of the last major shootings of its kind took place in Russian-annexed Crimea in 2018 when a student at a college killed 19 before turning his gun on himself.

Kazan is the capital of the Muslim-majority region of Tatarstan and located around 450 miles (725 km) east of Moscow.