At any point during the course of an investigation or inquiry into a complaint, the Board or its duly authorized agent may determine that there is not and will not be sufficient evidence to warrant further proceedings or that the complaint fails to allege misconduct for which a licensee may be sanctioned by the Board. In such event, the Board may dismiss or close its investigation of the complaint, and otherwise communicate with the registrant and/or the complainant as deemed appropriate by the Board.
265 CMR, § 8.05