Seven people have died and dozens more have been injured after a tram overturned in London, police have said. The driver, 42 from Beckenham, has been arrested on suspicion of manslaughter.
People were trapped inside and more than 50 were taken to hospital after the derailment in Croydon on Wednesday, the BBC reported.
The Rail Accident Investigation Branch (RAIB) said the tram was travelling at a "significantly higher speed than is permitted".
Deputy Chief Constable Adrian Hanstock said: "After liaison with the coroner, we can confirm that at least seven people have lost their lives as a result of this incident.
"Our officers will continue to work tirelessly throughout the evening to formally identify them and provide care and support for their families."
London Ambulance Service said eight people have serious or life-threatening injuries, while a total of 51 had been taken to two hospitals.
The RAIB said the tram derailed as it was negotiating a "sharp, left-hand curve" which has a speed limit of 12 mph.
Trams are not fitted with any safety protection systems that apply the brakes automatically if they are going too fast, according to the Office of Rail and Road.
Clinical director Dr Phil Moss said three were having surgery and could be kept in for "several days or even weeks."
Prime Minister Theresa May offered her thoughts and prayers and said the government was "closely in touch with the emergency services and other authorities to ensure that all is being done that is necessary to deal with this terrible incident."
London Mayor Sadiq Khan who visited the crash site said: "I am in close contact with the emergency services and Transport for London, who are working extremely hard under very difficult circumstances to get the situation under control and treat those who have been injured.
"The police have set up a number for friends and family to call for information: 0800 0560154."
A book of condolence has opened at Croydon Town Hall.
