Stevenage Train Station (Image: Archant)
Govia Thameslink has announced that Great Northern train services running through Stevenage will be affected by trespassers on the railway.
In a tweet sent out this afternoon, the company said services may be cancelled or delayed.
They said: "All lines have reopened following an earlier trespass incident.
"Trains are still subject to delay and short notice platform alterations at Stevenage."
More information to follow.
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