"The teenager is currently placed in a closed psychiatric hospital for psychological and psychiatric examination," - said in a statement on the website of the UK.

The head of the Investigative Committee of Russia, Alexander Bastrykin, instructed to report on the progress of the investigation of the case.

Earlier, the FSB of Russia announced the detention of a minor in Kazan, who is suspected of preparing an armed attack on an educational institution.

According to the available data, “a certain Ovsyuk Yaroslav, who lives on the territory of Ukraine,” persuaded to commit the mass murder of a teenager through a messenger. 

The Investigative Committee opened a criminal case under Part 1 of Art.

30 and part 2 of Art.

105 (preparation for the murder of two or more persons).