Train disruption between Harpenden and Luton
PUBLISHED: 17:21 06 June 2018 | UPDATED: 17:27 06 June 2018
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Some train lines are blocked between Harpenden and Luton this evening.
Thameslink are investigating the problem but has not released any more information.
A source believes it is a power line issue.
Many trains from Harpenden to Luton Airport Parkway are currently cancelled.
For more information about train times, visit www.nationalrail.co.uk/