Rail services to and from Hastings are subject to delays and cancellations due to a broken down train.
Southeastern said its services between Hastings and London had been altered as a result.
Southern said disruption is expected until 5.30pm.
In a statement, the rail provider added: “A broken down train at Hastings is causing disruption to services through the area, trains are all needing to use 2 of the 3 platforms whilst engineers attend the train.
“Services through the station are being disrupted, this may include short notice platform changes and or cancellations/alterations.”
More to follow.