Offences Against the State Act, 1939
Arrest and detention of suspected persons.
30.—(1) A member of the Gárda Síochána (if he is not in uniform on production of his identification card if demanded) may without warrant stop, search, interrogate, and arrest any person, or do any one or more of those things in respect of any person, whom he suspects of having committed or being about to commit or being or having been concerned in the commission of an offence under any section or sub-section of this Act or an offence which is for the time being a scheduled offence for the purposes of Part V of this Act or whom he suspects of carrying a document relating to the commission or intended commission of any such offence as aforesaid or whom he suspects of being in possession of information relating to the commission or intended commission of any such offence as aforesaid.
(2) Any member of the Gárda Síochána (if he is not in uniform on production of his identification card if demanded) may, for the purpose of the exercise of any of the powers conferred by the next preceding sub-section of this section, stop and search (if necessary by force) any vehicle or any ship, boat, or other vessel which he suspects to contain a person whom he is empowered by the said sub-section to arrest without warrant.
(3) Whenever a person is arrested under this section, he may be removed to and detained in custody in a Gárda Síochána station, a prison, or some other convenient place for a period of twenty-four hours from, the time of his arrest and may, if an officer of the Gárda Síochána not below the rank of Chief Superintendent so directs, be so detained for a further period of twenty-four hours.
(4) A person detained under the next preceding sub-section of this, section may, at any time during such detention, be charged before the District Court or a Special Criminal Court with an offence or be released by direction of an officer of the GárdaSíochána, and shall, if not so charged or released, be released at the expiration of the detention authorised by the said sub-section.
(5) A member of the Gárda Síochána may do all or any of the following things in respect of a person detained under this section, that is to say:—
(a) demand of such person his name and address;
(b) search such person or cause him to be searched;
(c) photograph such person or cause him to be photographed;
(d) take, or cause to be taken, the fingerprints of such person.
(6) Every person who shall obstruct or impede the exercise in respect of him by a member of the Gárda Síochána of any of the powers conferred by the next preceding sub-section of this section or shall fail or refuse to give his name and address or shall give, in response to any such demand, a name or an address which is false or misleading shall be guilty of an offence under this section and shall be liable on summary conviction thereof to imprisonment for a term not exceeding six months.