Nineteen people were killed and dozens more wounded, most of them teenagers, after a student opened fire in a technical college in Russian-annexed Crimea on Wednesday, the authorities said.
The toll rose to 19 on Wednesday afternoon, regional medical officials told TASS state news agency.
They said 39 remained hospitalised after the attack on the college in the city of Kerch on the peninsula annexed from Ukraine in 2014.
Russia's Investigative Committee said the attack was carried out by 18-year-old student Vladislav Roslyakov.
He was captured on security camera footage and later found dead with gunshot wounds.
Roslyakov enrolled at the college in 2015, according to its website.
RBK newspaper quoted an anonmyous fellow student as saying Roslyakov "really hated the college because of evil teachers and hinted he would take revenge on them."
Crimean leader Sergei Aksyonov told Russian television: "It was a mass murder committed by one scumbag."
A student at the college who asked not to be named told AFP: "I was in a class when I heard shooting on the first floor."
"When we all ran out into the corridor, there were others running and shouting that some guy with a machine gun was randomly shooting everyone in turn."
Another witness who gave his name as Sergei and who worked nearby said in a video on the Kerch.tv website that he heard "a bang and shots."
Sergei, whose shirt was covered in blood, said victims "were taken away in public transport, in minibuses and buses, with two or three people in each ambulance." "They are children and staff," the witness said. "I saw people without legs, without arms."