At least 11 people have been killed and four others injured in an attack on a school in the central Russian city of Kazan on Tuesday and according to Russian news agencies Interfax and Ria Novosti, the perpetrator is a teenager who has been arrested.

Citing a source, the Russian news agency Tass reported that there was a second perpetrator in the armed attack, who was neutralized.

According to emergency services, two students were killed falling from the windows of their classroom to escape.

В стрельбе в казанской школе, по предварительным данным, погибли учитель и шесть детей, сообщает источник ТАСС. TG-канал Baza сообщает о девяти погибших и десяти пострадавших.

На видео попал момент, когда дети выпрыгивали из окон во время стрельбы: pic.twitter.com/69FsR65UIk

— Газета.Ru (@GazetaRu) May 11, 2021

The victims, according to Interfax, include at least eight students and a teacher.

The RIA reported that the gunman had been arrested and that an explosion had been heard at the school earlier.

Videos uploaded on social media show emergency service vehicles parked outside the school and people running towards the building.

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Школа №175 в Казани оцеплена. В здании продолжаются работы. Там находится глава аппарата президента Татарстана Асгат Сафаров и сам президент Рустам Минниханов.

Видео: Леонид Спирин, для «Новой» pic.twitter.com/Ur5x11plfT

— Новая Газета (@novaya_gazeta) May 11, 2021

Other videos show broken windows outdoors.

Kazan is the capital of the Russian Republic of Tatarstan and is located 700 km east of Moscow.

The following video allegedly shows the arrest of the perpetrator:

Парня, который устроил стрельбу в казанской школе №175, задержали

Его зовут Ильназ Галявиев, ему 19 лет. При задержании он сообщил, что по адресу своей прописки заложил бомбу pic.twitter.com/Tq3dWRDcf5

— URA.RU (@ura_ru) May 11, 2021