Northern Rail said some lines were currently disrupted due to trespassers on the railway at Barnsley.
Staff are estimated to be on the site at 10:15pm to deal with the incident.
Disruption is expected to last until 10:30pm.
Trespassers on railway disrupt trains between Sheffield and Barnsley
Trespassers on the railway line are disrupting train services between Sheffield and Barnsley
By Alana Roberts
Monday, 8th April 2019, 10:02 pm
Updated Monday, 8th April 2019, 10:09 pm