11 Killed in School Shooting in Russia’s Kazan City

11 people have been killed and four wounded in a school shooting in the Russian city of Kazan.

According to the Interfax news agency, two gunmen opened fire in the school, and one of them — a 17-year-old — was apprehended. Local officials said some children were evacuated from the school but others still remained in the building.

Authorities said additional security measures have been put into place in all schools in Kazan, the capital of Russia’s Tatarstan region, roughly 700 kilometers (430 miles) east of Moscow.

Police have opened a criminal investigation into the incident.

While school shootings are relatively rare in Russia, there have been several violent attacks on schools in recent years, mostly carried out by students.