(4) If, in any case where a company is being wound up, the Registrar has reasonable cause to believe either that no liquidator is acting, or that the affairs of the company are fully wound up, and the returns required to be made by the liquidator have not been made for a period of 6 consecutive months, the Registrar shall publish in the Gazette and send to the company or the liquidator, if any, a like notice as is provided in subsection (3).