This is reported by TASS with reference to a source in law enforcement agencies.
“In Chelyabinsk, a schoolboy made a pyrotechnic product and brought it to the school where he planned to blow it up,” the source said.
According to him, the student was detained.
An audit is being carried out, during which, among other things, teachers of the educational institution are interviewed.
On December 13, an improvised explosive device went off on the territory of the Vvedensky Bishop's Convent in Serpukhov near Moscow, eight people were hospitalized.
The Main Directorate of the Ministry of Internal Affairs for the Moscow Region stated that it was blown up by a graduate of an Orthodox gymnasium.