St Albans City Station. Picture: Danny Loo. (Image: Archant)
An object on the railway between St Albans City and Luton is causing disruption.
Govia Thameslink Railway, which runs services between the two stations, has warned southbound trains could be delayed or cancelled at short notice because of the problem.
The disruption is expected to last until 2pm and you can follow any updates by searching for #StAlbans on Twitter.
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