(c) the lawful arrest or detention of a person effected for the purpose of bringing him before the competent legal authority on reasonable suspicion of having committed an offence or when it is reasonably considered necessary to prevent his committing an offence or fleeing after having done so;
(c) duine a ghabháil nó a choinneáil go dleathach chun é a thabhairt os comhair an údaráis dhlíthiúil inniúil as amhras réasúnach go bhfuil sé tar éis cion a dhéanamh nó nuair a mheasfar go réasúnach gur gá sin chun é a chosc ó chion a dhéanamh nó ó theitheadh i ndiaidh cion a dhéanamh;