An Mi-8 helicopter belonging to the FSB crashed near the village of Prudny in the Sosnovsky district of the Chelyabinsk region, killing all three crew members.

The Mi-8 helicopter crashed near the village of Prudny in the Sosnovsky district of the Chelyabinsk region.

The helicopter belonged to the FSB.

Three people were on board and all died.

The helicopter was conducting a training flight.

The preliminary cause of the crash was a technical failure.

An Mi-8 helicopter belonging to Russia's Federal Security Service (FSB) has crashed in the Chelyabinsk region, at least three people died.

The incident occurred as the helicopter was engaged in a training flight, and it descended into a forested area near the village of Prudny.

According to preliminary information, three people died.

There was no damage to buildings or individuals on the ground.

Preliminary inquiries into the incident have indicated two potential causes: equipment failure, or reduced visibility and potential entanglement with high-voltage power lines.

Mi-8 helicopter crashed in Sosnovsky district of Chelyabinsk Oblast, Russia. Three or four crew members died.

The helicopter belonged to an FSB air squadron and was performing a combat task.

Equipment failure is the probable reason for the crash.