Nine children were injured in a firecracker explosion at a school in the Moscow region.

Nine students of Secondary school No. 2 in the Moscow suburb of Istra needed medical help after a firecracker exploded in a classroom. This was announced on April 2 by the Ministry of Education of the Moscow region.

"A fifth-grade student during a Russian language lesson threw a firecracker bomb into a classmate's briefcase, which exploded, containing a certain chemical mixture. Nine children became ill, they received medical attention, their parents were informed, an ambulance and the police were called," TASS quoted the ministry as saying.

One of the students needed hospitalization. She was taken to the Istra Clinical Hospital.

The victim's mother told Izvestia that her daughter was already better.

"A boy, a classmate, threw a small firecracker into a briefcase, and it exploded in the briefcase. Not my daughter," she commented, adding that she did not know any other details.

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Earlier that day, it was reported that at a school in the village of Vedenka, Primorsky Krai, a student stabbed a classmate in the eye with a pen. The girl needed urgent hospitalization and medical help. The incident is being investigated by representatives of the regional headquarters of the Investigative Committee.