There have been disruptions on the Norwich to London line this morning because of electrical problems.
Greater Anglia said all lines had now reopened and that a normal service should be running, but the 6.39am Ipswich to Norwich train is currently being held at Diss.
A vehicle, which was on the line at Trowse, caused problems with the overhead cables.
It has now been removed and the power has been switched back on.
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