Up to 16 people are reported dead and more than 160 injured after a metro train derailed during Tuesday’s morning’s rush hour in Moscow.
It happened between two stations in the west of the city.
A major rescue operation has been underway with dozens of ambulances on scene and teams of emergency workers trying to pull those trapped to safety.
A power surge is believed to have caused the train to stall, triggering the derailment of a number of carriages.
One survivor said his carriage was half-full.
“Suddenly there was a harsh impact and everyone fell down,” he said.
Another man said: “The train came to a sudden halt. Then the electricity was cut and there was smoke everywhere. The carriage fell to one side, off the rails, so people were trapped and could not get out of the train.”
Helicopters airlifted casualties to hospital. Many of those hurt are in a serious condition.
The accident happened in one of the deepest parts of the underground system, between the Slaviansky Boulevard and Park Pobedy stations.
It is one of the Moscow metro system’s worst-ever disasters. There seems to be no suggestion of foul play.