All rail services between Lewes and Brighton are currently suspended due to an incident on the line.
Southern Railways say on Twitter/X: “Due to emergency services dealing with an incident between Brighton and Lewes, all lines are currently blocked.
“Power in the area has been switched off at this time.
“If you are on a train that is not yet in a platform, please remain onboard and wait for further instructions from onboard staff.
“While power in the area is switched off, ticket acceptance is in place with Brighton and Hove Buses between Brighton, Lewes and Eastbourne at no extra cost.
“You may need to use an alternative route to complete your journey today or travel later instead.”