London Marylebone railway station has been closed due to a problem with a tunnel.
National Rail Enquiries said no trains will enter or leave the west London station on Wednesday morning.
Chiltern Railways, which serves the station, told passengers on Twitter there is “a defect in the tunnel to/from London Marylebone”.
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The station connects the capital with locations such as Birmingham Moor Street, Oxford and High Wycombe.
Update: The tunnel reopened at around 10am on Wednesday.
A Network Rail spokesman said: “We’re sorry to Chiltern passengers delayed while our engineers repaired some loose brickwork in St John’s Wood tunnel first thing this morning.
“The lines in and out of London Marylebone have now reopened but while train times return to normal we’d advise passengers to check before they travel by using National Rail inquiries.”
