“From 2018 to the present, the Federal Security Service has identified about 150 large youth extremist Internet communities with about 50,000 users on the global network ... over 50 armed attacks against educational institutions have been prevented,” the department’s Public Relations Center told RT.

In addition, the security forces managed to suppress the activities of more than 260 propagandists of extremist ideology, who conducted "large-scale propaganda of radical ideology", aimed at creating "anti-social sentiments" and cruelty among adolescents.

The FSB has carried out preventive work with more than 7,000 adolescents who "fell under the influence of destructive ideas."

“The persons who planned the attacks were socially unadapted adolescents with severe or latent mental illness, as well as in conflict with peers, teachers, and family members,” the FSB press service said.

It is clarified that these individuals were members of Internet communities that “propagandize the ideology of murder” and “target the age group of 12-17 years.”

Earlier, the FSB said that the terrorist attacks in educational institutions that trained two teenagers from Kerch born in 2003 and 2004 were prevented in the Crimea. They are detained.