If an eligible officer of an eligible agency:
(a) suspects, on reasonable grounds, that one or more eligible offences have been, are being, are about to be or are likely to be committed; and
(b) suspects, on reasonable grounds, that entry and search of particular premises will substantially assist in the prevention or investigation of one or more of those offences; and
(c) believes, on reasonable grounds, that it is necessary for the entry and search of the premises to be conducted without the knowledge of the occupier of the premises or any other person present at the premises;
the eligible officer may seek the authorisation of the chief officer of the agency to apply for a delayed notification search warrant in respect of the premises.