RIA Novosti informs about this with reference to the official representative of the SK of Russia Svetlana Petrenko.

“With regard to four persons, the investigation is petitioning the court to choose a preventive measure in the form of detention,” she said.

As TASS clarifies, the Investigative Committee asks to arrest, in addition to Fedyaev, general director of SDS-Ugol Gennady Alekseev, technical director of SDS-Ugol Anton Yakutov and chief engineer of LLC Mine Listvyazhnaya Anatoly Lobanov.

Earlier it was reported that investigators detained Fedyaev and three other people from among the leadership of the SDS-Ugol company.

In early December, Russian President Vladimir Putin, during a meeting on the coal industry, criticized the board of directors of SDS-Ugol for non-compliance with safety conditions at the company's Listvyazhnaya mine in the Kemerovo region.

The head of state said that, according to the investigation, the reason for the tragedy at the Listvyazhnaya mine in the Kemerovo Region was the lack of control by the management of the mine over the work carried out with increased gas pollution.

On November 25, an accident occurred at the Listvyazhnaya mine in Kuzbass, as a result of which 51 people died and dozens were injured.