A student has opened fire in a school near Moscow, according to local reports.
RT reports that the student attacked a teacher with an axe before opening fire with an air gun and launching smoke grenades.
The incident took place in the Ivanteevka school, 20km northeast of Moscow, according to a police press officer quoted by news agency TASS.
There are at least four people reported injured - three students and a teacher.
Witnesses have been posting footage of the aftermath of the incident on social media, including the video below.