"(3) The Head of the Directorate may, if he or she has reason to suspect that a national priority offence has been or is being committed, request the National Director of Public Prosecutions to designate a Director of Public Prosecutions to exercise the powers of section 28 of the National Prosecuting Authority Act, 1998 (Act No. 32 of 1998). (4) For purposes of sub-section (3), a Director of Public Prosecutions so designated, shall be deemed to be an Investigating Director, as referred to in section 1 of the National Prosecuting Authority Act, 1998. (5) A Director of Public Prosecutions referred to in sub- section (3) may designate a member of the Directorate to conduct the investigation or part thereof, on his or her behalf and report to him or her.".