Seven children and a teacher have been killed in a shooting at a school in the Russian city of Kazan, officials say.
More than 20 others, mostly children, were reportedly wounded. A 19-year-old suspect was detained.
The attack happened 820km (510 miles) east of Moscow and Prime Minister Mikhail Mishustin spoke of “great sorrow”.
The leader of Tatarstan said the attack was a “major tragedy” for the mainly Muslim republic.
“We are deeply saddened that this has happened,” said Rustam Minnikhanov.
Responding to the shooting, Russian President Vladimir Putin said he would review the country’s gun control laws.
School shootings are relatively rare in Russia. One of the last major incidents happened in Russian-annexed Crimea in 2018.