UPDATE: Travel disruption on trains between Sheffield and Doncaster
Train services in Sheffield will be disrupted due to a fault in Rotherham which has left all lines blocked.
A fault in the signalling system at Rotherham Central is affecting trains in and out of Sheffield.
Northern Rail have issued a travel update warning of disruption to services between Sheffield and Doncaster, and Sheffield and Leeds.
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Trains are expected to be delayed, cancelled or diverted.
Disruption is expected until 10pm tonight.
Staff are now on site at Rotherham Central station to rectify the issue.