The Transport Investigative Committee told RT that in December 2022, the accused set fire to a relay cabinet and a sectioning post for a contact network on the Kuibyshev Railway.
The criminals received detailed instructions for preparing the combustible mixture via a messenger from a subscriber number connected to the network through Ukrainian servers.
Earlier, the Lefortovo Court in Moscow decided to extend the arrest of four members of a Ukrainian sabotage and reconnaissance group who were preparing high-profile terrorist attacks on military and energy facilities in the Bryansk region in August.