524 Interception of Communications [No. 25 certificate of exemption, in the prescribed form in which his name, and the scope, period and conditions of the exemption are specified. (4) A certificate of exemption granted pursuant to subsection (3) shall be published in the Gazerte and shall become valid upon the date of such publication. No such publication shall be required in the case of equipment imported, manufactured, assembled, possessed, operated, or purchased by a law enforcement or security agency operating for or on behalf of the Government and the purpose of which shall be to carry out lawful interceptions under this Act. (5) Acertificate of exemption may at any time in like manner be amended or withdrawn by the Council. (6) Penalty for contravention of section 24. A certificate of exemption lapses upon: (a) termination of the period for which it was granted; or (b) withdrawal pursuant to subsection (5). 26. (1) A person who contravenes section 24 commits an offence and, on conviction on indictment, is liable to: (a) a fine of not less than twenty five thousand dollars and not exceeding fifty thousand dollars or to a term of imprisonment not exceeding three years in the first instance; (b) a fine of not less than fifty thousand dollars and not exceeding one hundred thousand dollars or to a term of imprisonment not exceeding five years in the second instance; and (c) a fine of one hundred thousand dollars and a term of imprisonment not exceeding five years in the subsequent instances.