A gunman has opened fire at a school in central Russia, killing at least 13 people and injuring 21, Russian officials say.
Victims include seven children at the school of about 1,000 pupils in the city of Izhevsk.
The gunman killed himself at the scene.
He was a former pupil of the school.
Russian media have posted videos which appear to show panic inside the building where the shooting took place.
Some footage shows blood on a classroom floor and a bullet hole in a window, with children crouching down underneath desks.
