At least seven people were killed, while more than 50 were injured when a tram overturned in the southern part of London this morning, whose driver was arrested, the police said, reports Reuters.
According to the preliminary results of the investigation, the tram was moving at too high a speed when it suddenly entered the curve, the investigators said.
A spokesman for the London Ambulance Service said that 51 injured people were taken to hospital, some of them with serious injuries.
Rescue crews were called at around 6.10am local time after the two-car tram derailed near a station near the center of Croydon, a large suburb south of the British capital.
Eight fire trucks, five specialist rescue units and more than 70 firefighters participated in the rescue of people stuck under the tram, using heavy equipment.
The police announced that the investigation into the cause of the accident, which happened in heavy rain, is continuing.
Prime Minister Theresa May said that her thoughts and prayers are with those affected by "that terrible incident".
Today's accident is the deadliest among rail accidents in Britain since the one in which seven people died and 70 were injured when a high-speed train from London derailed at Potters Bar station north of the capital in 2002, the British agency recalls.
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