(1) Other than in respect of a complaint specified in section 44(2), the Ombudsman may conduct an investigation into a complaint referred to him or her.

(2) The Ombudsman shall keep the parties to the complaint informed as to the progress of the investigation.

(3) In conducting an investigation, the Ombudsman may -

(a) require any person, who in the opinion of the Ombudsman, is in possession of information, or has a document or thing in his or her power or control, that is relevant to the investigation, to -

(i) provide to him or her that information, either orally or in writing,

(ii) produce to him or her that document or a copy of the document,

and

(b) require any person to attend before him or her, either voluntarily or by way of summons, and be examined on oath in relation to any matter, including to produce a document or copy of a document referred to in paragraph (a)(ii), that appears to the Ombudsman to be relevant to the investigation.