Train services between Stockport and Sheffield are currently unable to run after a person was hit by a train.
The incident is affecting East Midlands Trains on the Liverpool/Nottingham/Norwich route.
The line is closed in both directions between Sheffield and Stockport.
East Midlands Trains said it expected normal conditions would resume around 1pm.
The company said they had arranged ticket acceptance on the following routes:
Sheffield - Leeds - Cross Country Trains
Sheffield - Leeds - Northern Rail
Leeds - Manchester - Transpennine Express