St Albans Abbey Station. Photo: Danny Loo. (Image: Archant)
There are likely to be no trains between St Albans Abbey and Watford Junction until later today.
A train fault between the two stations means no trains will be able to run on the line until 5.20pm.
Tickets are being accepted on the Arriva 321 service.
To follow the incident on Twitter, use #StAlbansAbbey.
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