The identity of the attacker and the motive for the shooting in Izhevsk, about 970 kilometers east of Moscow, were not clear. Russia’s Investigative Committee, which handles major crimes, said the gunman was wearing a balaclava. He posted a short video showing his body slumped on the floor of a classroom with overturned furniture and papers strewn across the floor. He was dressed in black, with a red swastika in a circle painted on his T-shirt. The committee said the six adult victims included teachers and security guards. It said 21 people, including 14 children, were injured. State news agency Tass quoted investigators as saying the attacker was armed with two pistols and a large supply of ammunition. Kremlin spokesman Dmitry Peskov said President Vladimir Putin “deeply mourns” the deaths. Peskov said doctors, psychologists and neurosurgeons were sent to the city on Putin’s orders. Russia has seen other school shootings in recent years. In May 2021, a teenage gunman killed seven children and two adults in the city of Kazan. In April 2022, a gunman killed two children and a teacher at a kindergarten in the central Ulyanovsk region before killing himself.