GAA fans returning from the Tyrone v Armagh match at Croke Park in Dublin reported an affray to staff.
"Gardaí arrived on the scene and boarded the train".
A father has told theIrish Post how he saw a female Armagh supporter get punched in the face amid the chaos.
Passengers described the overcrowded conditions on the train, with some claiming people were forced to sit on the floor for the journey home.
"We stopped for 30 minutes outside Drogheda".
Horrified passengers watched as a dozen Gaelic football fans went head-to-head on a train from Belfast to Dublin. No complaints were made and no arrests took place.
Translink said gardaí were called after a train manager raised concerns - and a number of passengers were removed.
Gardaí confirmed that they were called to Drogheda station to deal with the incident.
"The incident resulted in a delay to the Enterprise service arriving into Belfast".