Irish Rail is to introduce on the spot fines on the DART service, in an effort to clamp down on antisocial behaviour.
According to the Irish Independent, additional CCTV cameras will also be set up at Malahide Station, following a number of incidents in recent weeks.
Gardaí are currently investigating a fight that took place last Friday, in which a man in his thirties was left with injuries after almost falling under a moving train.
