Two of the four people arrested in connection with a serious sexual assault in Wexford in July are being held in Waterford Garda Station.
This alleged assault happened shortly after midnight on the 28th of July in the Burrow area of Courtown Harbour in Wexford.
Three girls reported being sexually assaulted and one of them said she was raped.
The girls - who are from West Dublin and were in the area on holiday - are aged between 15 and 17.
At the time of the incident, Gardaí said the girls involved were interviewed by a team of specially trained officers.
This morning, three teenage boys and a "vulnerable" young man were arrested on suspicion of rape.
Two juvenilles are being detained in Waterford and the other two in Kilkenny under section 4 Criminal Justice Act.
Gardaí are continuing their appeal for information.
