I propose to take Questions Nos. 505 and 506 together.
As there is no segregation of arriving passengers at Dublin Airport, it is not possible to distinguish between passengers arriving on a domestic or international flight in advance of them presenting at an immigration control desks. In all cases an Immigration officer must establish where passengers have arrived from, and to do this, an immigration officer may ask passengers questions to establish their nationality and port of embarkation.
Where a person, who has travelled from within Ireland, is not in possession of a passport, an immigration officer may ask questions to establish that the person is entitled to pass through Immigration controls without producing a passport. The production of other forms of identification can be used to assist an immigration officer with these enquiries.