Sources reported a riot by prisoners during the transport in Kabardino-Balkaria.

Prisoners being transported on the Vladikavkaz – Adler train killed one and injured three FSIN officers, taking them hostage in the Kabardino-Balkaria region, sources in the law enforcement agencies reported. The state agency denied this information, citing a source in the FSIN.

The incident, according to sources, occurred near the Murtazovo station, located in Terek (Kabardino-Balkaria).

In the train where the prisoners were being transported, the emergency brake was pulled, after which a riot began: the detainees managed to seize weapons from the escorts and killed one FSIN officer. Three others were injured, according to sources from REN TV and Izvestia.

The convicts barricaded themselves inside with the injured officers, taking the latter hostage. There is information that one of the prisoners was also killed. "The carriage is surrounded, no detainees have escaped. Emergency services and special forces continue to gather at the scene," writes the Telegram channel 112, linked to the law enforcement agencies.

According to the Telegram channel Baza, after the attack by the prisoner on the escorts on the Vladikavkaz – Adler train, two people died: the attacker himself and an FSIN officer. Three other escorts were seriously injured.

"During a stop, one of the prisoners was being taken to the toilet from the last carriage where the detainees were. At that moment, he grabbed an automatic weapon from the escort and opened fire on the FSIN officers," the channel's message states.

Official sources have not yet confirmed information about the incident. At 22:56 Moscow time, the state news agency reported that "a source in the FSIN denied TASS's information about an alleged riot in the carriage transporting prisoners near Vladikavkaz." This source did not provide its version of the events.