Rail services on the East Coast Mainline between Edinburgh and Berwick are facing delays this afternoon after a freight train broke down near Dunbar.
Services are said to be delayed by up to 80 minutes, a situation which will continue until further notice.
National Rail Enquiries said that due to a backlog, ScotRail services between Edinburgh and Dunbar are currently unable to run.
A ScotRail spokesman said: “We would like to apologise to customers for any inconvenience caused by this issue, which was outside our control.”
Rail passengers already faced severe delays during morning rush hour this morning because of overhead cable problems on a train line between Waverley and Haymarket stations.
ScotRail said all lines from the busy Waverley station were affected from around 7.30am onwards.
It advised that First Bus would accept valid train tickets for services running between Edinburgh and North Berwick and Bathgate.
The train operator provided bus services from Bathgate to operate to and from Edinburgh Park.
ScotRail said on its website: “Due to very limited replacement transport being secured, passengers are advised to consider making their own alternative arrangements.