A school shooting erupted Tuesday morning in the Russian city of Kazan.
Russian officials say eight people were killed — seven students and a teacher — and 21 others were hospitalized with wounds.
Rustam Minnikhanov, governor of the Tatarstan republic which has Kazan as its capital, said four male and three female eighth-grade students died in the shooting.
Earlier reports said 11 people had been killed.
The governor said the shooter was 19, has been arrested and a firearm was registered in his name.
Authorities said additional security measures were put into place in all schools in Kazan, a city 700 kilometers (430 miles) east of Moscow.