Rail passengers face delays in north-east Essex after plastic sheeting became caught up in overhead electric wires.
Train operator Abellio Greater Anglia (AGA) said the plastic sheeting issue took place between Colchester and Marks Tey at around 1.30pm, causing some lines to become blocked.
Services running through these stations may be cancelled, delayed by up to 15 minutes or revised.
Disruption is expected to last until 3.45pm.
An AGA spokesman said: “Owing to plastic wrapped around the overhead line, the London bound line is currently blocked between Colchester and Marks Tey.
“At Marks Tey station London bound train services are currently departing from platform two. Service alterations include: 1.38pm Liverpool Street to Colchester Town will terminate at Colchester; 3pm Colchester Town to Colchester has been cancelled.
“We apologise for the disruption to your train services this afternoon.”
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