18 Online Safety Act, No. 9 of 2024 (c) In the event, the information necessary to give such notice as aforesaid is not available, the complainant shall specify the absence of such information in the complaint. (4) A written acknowledgement of the receipt, including a receipt in electronic form, of such information shall be immediately issued by the information officer on behalf of the Commission. (5) Where the Commission is of the opinion that sufficient material exists that a prohibited statement has been communicated, the Commission shall carry out investigations through the officers of the Commission. During such investigations, an opportunity to be heard shall be given to the person alleged to have communicated such prohibited statement. (6) (a) If the Commission is satisfied, that sufficient material exists that a prohibited statement has been communicated, it may, taking into consideration the seriousness of the matter and the likelihood of damage or harm caused by such prohibited statement, issue notice to the person who communicated such prohibited statement, to take measures to prevent the circulation of such prohibited statement. (b) A person to whom a notice has been issued under paragraph (a) shall comply with such notice immediately but not later than twenty four hours from such notice. (c) Notice referred to in paragraph (a), shall be deemed to be served, where it is served by personal service, sent by post to the last known address of the person who communicated such prohibited statement, or served by electronic means to such person, or served by such other appropriate method adopted by the Commission depending on the nature of the case.