(1) Where in the course of the investigation of any complaint it appears to the Commission-

(a) that under the law or existing administrative practice there is adequate remedy for the complaint, whether or not the complainant has availed himself of it; or

(b) that having regard to all the circumstances of the case, any further investigation is unnecessary, it may refuse to investigate the matter further.

(2) The Commission may refuse to investigate or cease to investigate any complaint

(a) if the complaint relates to a decision, recommendation, act or omission of which the complainant has had knowledge for more than twelve months before the complaint is received by the Commission; or

(b) if the Commission considers that 

(i) the subject matter of the complaint is trivial;

(ii) the complaint is frivolous or vexatious or is not made in good faith; or

(iii) the complainant does not have sufficient personal interest in the subject matter of the complaint.

(3) Notwithstanding subsection (2) of this section, if within six months after the Commission's refusal or ceasing to investigate any complaint under this section, fresh evidence in favour of the complainant becomes available, the Commission shall, at the request of the complainant, re-open the case.

(4) Where the Commission decides not to investigate or to cease to investigate a complaint, it shall within 30 days of the decision inform the complainant of its decision and the reasons for so refusing.