This is reported by the regional prosecutor's office in his Telegram.

“According to preliminary data today, at about 08:50, during production work, an extraordinary detonation of a substance occurred at a depth of 1.2 km.

Evacuated 88 workers.

Three people died,” the statement said.

An investigation has been organized into the incident.

Earlier it was reported that an explosion occurred at the mine of the Gaisky GOK enterprise in the Orenburg region, the fate of three people is unknown, there is no connection with them.