The Ombudsman may, at a reasonable time:
(a) enter and inspect premises (other than premises, or the part of premises, used as a residence) occupied by a public authority; and
(b) take into the premises the persons and things the Ombudsman reasonably requires for the investigation; and
(c) take extracts from, or copy in any way, documents located at the premises; and
(d) require an officer of the authority at the premises to give the Ombudsman reasonable help in exercising a power mentioned in paragraph (a), (b) or (c).