In a statement, the Brititish Transport Police said:
"A four-year-old girl, Emma Lifsey, sustained serious injuries and was airlifted to Sheffield Children's Hospital, where she was sadly pronounced dead in the early hours Wednesday, 5 December. Her family have been notified.
"The police investigation into the incident is ongoing and remains very much in the early stages. Officers are working hard to establish the full circumstances surrounding the incident, including how the vehicle came to be on the tracks at the time."
More top news
Wet and windy in the north tomorrow, bright and warm in the south.
The Democratic presidential told reporters: 'Anybody who complains about the microphone is not having a good night.'
A young girl made a tearful plea at a Charlotte City Council meeting in the US following the shooting of a black man by a police officer.