Train services between Nottingham and Newark Castle have been suspended after a freight train derailment.The delay has come only a day after the revamped Nottingham railway station reopened after five weeks of track and signal work.
East Midlands Trains said services to Lincoln and Peterborough were also disrupted by the derailment in Carlton.
The station was virtually closed during the upgrade with buses taking people to other stations for onward travel.
Train services to London, Leicester, Derby and other locations are not affected.
"A freight train has derailed in Nottingham so we are using replacement buses between Nottingham and Newark Castle, and passengers are facing delays of up to an hour," an East Midlands Trains spokesman said.
The freight train was travelling between a Humber oil refinery and Tamworth when two of 30 carriages derailed, a Network Rail spokesman said.
The two carriages remained upright, the spokesman added.
British Transport Police and the Rail Accident Investigation Branch are at the scene of the accident.
There are related traffic delays on Station Road in Carlton where the road is blocked near Victoria Road and Midland Road because the railway barriers are down.
For the 12 days between 29 July and 9 August there were no services to the east of Nottingham, to and via Newark or Grantham.