Sec. 5. (a) If the commission determines the complaint does allege facts sufficient to constitute a violation of this article, the commission shall promptly investigate the allegation.
(b) If after a preliminary investigation the commission finds that probable cause does not exist to support an allegation of a violation of this article, the commission shall do the following:
(1) Dismiss the complaint.
(2) Notify the complainant and the respondent of the commission's action.
(c) If the commission finds that probable cause exists to support an allegation of a violation of this article, the commission shall hold a hearing on the matter not more than thirty (30) days after making the determination. IC 4-21.5 applies to a hearing held under this subsection.