Updated

Emergency officials say a subway train has derailed in Moscow, killing two people and injuring at least 50.

Several cars left the track in the tunnel during rush hour on Tuesday after a power surge triggered an alarm, which caused the train to stop abruptly.

Yuri Akimov, a Moscow representative of the emergency services, said in a televised briefing outside the Park Pobedy station that about 200 people were evacuated from the train, which was stuck between two stations in west Moscow.

Several people who were gravely injured were taken out of the station and airlifted from the scene.

While accidents are regular occurrences in the Moscow Metro, deadly incidents are rare.