A team of investigators are on site after a freight train derailed at Sheffield railway station, disrupting services across the north of England.
According to reports, no one has been injured but Network Rail said the derailment had led to significant damage to signalling and points equipment, resulting in five of the station's eight platforms were closed.
The freight train appears to have come off the tracks while passing through platform one at Sheffield station.
Multiple carriages had derailed but there was 'no indication as to the cause at this time'.
The Rail Accident Investigation Branch said: 'We understand that 16 wagons have derailed and no injuries have been reported. Inspectors are on site gathering evidence as part of the process of conducting a preliminary examination.
'If the evidence collected indicates there are likely to be important safety lessons for the railway industry, then a full and thorough investigation will be carried out and the findings, along with any safety recommendations, published.'
Network Rail said a number of services had been cancelled or were being diverted.
The train was pulling wagons of cement and derailed north of the city's station in the early morning of Tuesay (11 November).