Two platforms are currently out of use at a railway station due to a ‘metal bin’ on the line.
Southern Rail said lines had been blocked between platforms two and three at Haywards Heath station.
Trains are being forced to run at a reduced speed due to the obstruction and services travelling through the area have been delayed by up to 15 minutes.
The disruption is set to last until 2pm.
A Southern Rail spokesman said: “We are working to get the metal bin off the track as quickly and safely as possible.
“We thank you for your patience while we resolve this issue.”
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