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.
Some footage shows blood on a classroom floor and a bullet hole in a window, with children crouching down underneath desks.
Seven children and six adults were killed, including two security guards and two teachers, according to Russian officials. Staff and pupils have been evacuated from the school buildings.
A video posted online by the investigative committee shows the gunman lying dead on the floor wearing a T-shirt with a Nazi symbol and a balaclava. Investigators are searching his place of residence.
The school is in the centre of Izhevsk, a city of about 650,000 residents, close to central government buildings.