Gardai have been called in to deal with a 'skirmish' on board a DART this evening.
Irish Rail says a group of around fifty young pople boarded a train at Howth earlier, when a fight broke out.
Security tried to deal with the violence, but had to call Gardai in as back-up.
The scuffle led to the 17:45 DART from Howth to Bray being delayed for 30 minutes.
