Following a woman being hit by a train at Hatfield Station, no Great Northern trains are stopping at the station.
Some northbound lines have now reopened following the incident.
Great Northern tweeted: “Services are now running northbound between Welwyn Garden City and Potters Bar but are not calling at Hatfield.”
Great Northern stated on its website: “Train services running through Welwyn Garden City and Potters Bar may be cancelled or delayed.
“Disruption is expected until 12.45pm today.”
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