According to the latest data, 20 people, including 15 students and five college staff members, were killed and more than 50 were injured. 12 of whom were in an extremely serious condition.
People lay flowers in downtown Simferopol after nineteen people were killed and dozens more wounded. Teachers and classmates have described the attacker as a shy person with few friends.
"The supposed killer shot himself, it's a student in the fourth year who was studying at the college".
There seems to be some disbelief among Russian officials that the Kerch rampage could have been a lone wolf attack and not part of something broader and more directed.
According to a source cited by the RIA Novosti state news agency, Roslyakov had legally acquired a gun licence and passed the necessary psychological tests to do so.
Initially, the Investigative Committee of Russian Federation considered the incident as a terrorist attack, but later the case was requalified to article "Murder of two and more persons publicly risky method".
Roslyakova said her grandson did not have many friends and spent all his time indoors, playing computer games.
The territory of the college where the explosion took place is still cordoned off by the Rosgvardiya, but the principal plans to resume the educational process on Monday. Roslyakov had obtained his gun license only around two months ago, local officials said.
The attack was then reclassified as a murder. It was a real act of terrorism.
The teenager often put gloomy posts on social media and was not sociable, said fellow students. Numerous victims were teenage pupils at the school, The Associated Press reported.
Aksyonov announced on Russian state TV there would be three days of mourning.
Putin offered his condolences to the families of the victims.
Putin said at a forum in the southern city of Sochi that the killing was the "result of globalisation" and the continuation of a trend that had begun in the US.
"I locked the door, hoping he wouldn't hear me", Gavrilov told the Komsomolskaya Pravda newspaper.
Russian Defence Minister Sergei Shoigu said four military planes were ready to evacuate casualties for medical treatment and that space in military hospitals was available for the victims. It said all the victims died of gunshot wounds.
"There are a lot of victims, they have been loaded into fast cars", a journalist for Kerch FM said.
Some wounded people have been seen lying on stretchers outside the college, which provides vocational training to teenage pupils. The same month, a teenager attacked other students with an axe at a school near the Siberian city of Ulan-Ude and then set the classroom on fire.