(1) Where a member of the Garda Síochána is in -

(a) a public place, or

(b) any other place under a power of entry authorised by law or to which or in which he or she was expressly or impliedly invited or permitted to be,

and he or she has reasonable grounds for believing that -

(i) an arrestable offence was, is being, or may have been committed in the place, or

(ii) there is, or may be, in the place evidence of, or relating to, the commission of an arrestable offence that was or may have been committed elsewhere,

he or she may, pending the giving of a direction under subsection (3) in relation to the place, take such of the steps specified in subsection (4) as he or she reasonably considers necessary to preserve any evidence of, or relating to, the commission of the offence.