Criminal Justice (Public Order) Act 1994
Arrest without warrant.
24.— (1) Where a member of the Garda Síochána finds any person committing an offence under a relevant provision, the member may arrest such person without warrant.
(2) Where a member of the Garda Síochána is of the opinion that an offence has been committed under a relevant provision, the member may—
( a) demand the name and address of any person whom the member suspects, with reasonable cause, has committed, or whom the member finds committing, such an offence, and
( b) arrest without warrant any such person who fails or refuses to give his name and address when demanded, or gives a name or address which the member has reasonable grounds for believing is false or misleading.
(3) Any person who fails or refuses to give his name and address when demanded by virtue of subsection (2), or gives a name or address when so demanded which is false or misleading, shall be guilty of an offence.
(4) A person guilty of an offence under subsection (3) shall be liable on summary conviction to a fine not exceeding F35 [ € 1,000 ] or to a term of imprisonment not exceeding 6 months or to both.