The video posted on Twitter was filmed by one of the passengers. The train was on its way from the Limerick Colbert station to the Limerick junction. The incident took place on Sunday.
The lady was abusive and ranted for 10 minutes, the passengers said. "Go back to India. Don't give me your guff,' the woman yelled. "Look at the ugly head of this fella. The only reason he is backing you up is because he is ugly," she went on to tell another passenger who stood up for the person she was yelling at.
The Irish rail has taken a serious view of the incident and said such behaviour will not be tolerated. The video has been shared with the police who are investigating the matter.