Commuters are facing major delays after a train derailed in Leeds.
Services between Leeds, Lincoln and Kings Cross are affected after an empty passenger service struck a stationary train at the Neville Hill depot.
Train operator London North Eastern Railway (LNER) said an investigation was under way after the "very low-speed" collision on Wednesday night.
No-one was injured but disruption is expected on the network until about 18:30 GMT.
In a statement, LNER said: "We apologise to any customers who may have their journeys disrupted."
Network Rail said the disruption was because access was restricted to the depot which is used by a number of train operators.
A spokesperson said: "We are working with train operators to run the best possible service and passengers can check their specific journey on National Rail Enquiries or with their train operator before travelling."
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