The Investigative Committee said in a statement a 15-year old boy walked into a full classroom in the suburb of Ivanteyevka earlier today with the gun hidden under a raincoat.
The teacher was hospitalised with a brain injury. A student who jumped out of the window suffered a fracture, while two others who jumped had bruises. There was no indication that anyone was shot.
The suspect was detained, the investigators said. They did not identify a motive for the attack.
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