There are reports of a person having been hit by a train at Barnsley railway station.
The incident is believed to have happened at 14:40 this afternoon.
Emergency services are currently attending.
Northern Rail train services between Wakefield / Huddersfield and Sheffield are subject to disruption.
National Rail have now said on Twitter that the person has 'fallen underneath a train' rather than having been hit by one. Rail services continue to be delayed while emergency response staff attend.
BBC Radio Sheffield have said that a woman has been injured after a wheelchair went off the platform.
Network Rail has said that the woman was on a mobility scooter.
Severe delays have been reported as trains are diverted from Barnsley station.
The woman has been taken to hospital suffering from minor injuries.