A broken down train at Pemberton is causing disruption to trains between Wigan Wallgate and Kirkby.
Trains may be delayed by up to 30 minutes or cancelled until approximately 09:30.
Replacement buses have been put on this morning, operating between Wigan Wallgate, Wigan North Western and Kirkby.
Commuters can follow live updates of the situation by using the hashtag #Pemberton.
For more details visit nationalrail.co.uk