Four people have been injured after a student armed with an axe stormed into a school in the Siberian city of Ulan-Ude on Friday and set fire to the building with a Molotov cocktail. Initial reports suggested a ninth-grader attacked a teacher and at least three students. He chopped off one of the victim's finger, according to reports. All have been taken to hospital. The attacker has been... Еще detained.