A spokesperson for Stena Line confirmed that the incident occurred on the 2pm sailing from Fishguard to Rosslare.
A Gardai spokesperson said emergency services were alerted to the incident shortly after 5pm and went on board the ship.
The incident occurred on the 2pm sailing from Fishguard in Wales to Rosslare Europort.
“A senior investigating officer (SIO) has been appointed to lead the investigation and a family liaison officer (FLO) has been assigned to provide support and information to the deceased’s family.”.
“A man was arrested in connection with the investigation and is currently detained under Section 4 of the Criminal Justice Act, 1984 at a Garda Station in the eastern region.
