"The court ruled to elect Alekseev a measure of restraint in the form of detention for one month and 11 days - until January 25, 2022," TASS quoted the judge as saying.
Earlier it was reported that a court in Kemerovo detained Anton Yakutov, technical director of SDS-Ugol, until January 25.
During a meeting on the coal industry, Russian President Vladimir Putin criticized the SDS-Ugol board of directors for failing to comply with safety conditions at the company's Listvyazhnaya mine in Kuzbass.
On November 25, an accident occurred at the Listvyazhnaya mine in Kuzbass, as a result of which 51 people died and dozens were injured.