(b) he had been allowed to enter or remain in Zimbabwe through error, oversight, misrepresentation or a contravention of this Act or a repealed Act; or (c) it had not been discovered that he was a prohibited person or an alien. PART II ADMINISTRATION 5 Chief Immigration Officer and immigration officers (1) For the purposes of this Act, there shall be— (a) a Chief Immigration Officer; and (b) such number of immigration officers as may be required; whose offices shall be public offices and form part of the Public Service. (2) The Minister may confer or impose all or any of the functions of an immigration officer in terms of this Act upon any person who is a police officer or any person who is employed by the State and, in the opinion of the Minister, is qualified to exercise those functions. 6 Delegation of functions of Minister (1) Subject to such conditions as he may fix, the Minister may, in relation to all cases or any case or class of cases, confer or impose upon any immigration officer or class of immigration officers all or any of his functions in terms of this Act, other than his functions in terms of paragraph (a) or (g) of subsection (1) and subsections (6) and (7) of section fourteen, paragraph (f) of subsection (2) of section fifteen and section forty-one. (2) The Minister may withdraw any function conferred or imposed in terms of subsection (1). 7 Powers of search and inquiry of immigration officers (1) An immigration officer may, for the purpose of exercising his functions under this Act— (a) enter upon and search any aircraft, boat, train, motor vehicle or premises in Zimbabwe: Provided that an immigration officer may not enter or search any premises unless he believes on reasonable grounds that evidence relating to a contravention of this Act is to be found on those premises; (b) subject to subsection (2), search any person where he believes on reasonable grounds that the search is necessary for the prevention or detection of a contravention of this Act; (c) take the finger-prints, palm-prints and photograph of any person who is, or is on reasonable grounds suspected of being, a prohibited person; (d) question any person who desires to enter or leave Zimbabwe or whom he believes on reasonable grounds to be a prohibited person or an alien; (e) require the captain of an aircraft, the master of a boat, the guard or conductor of a train or the person in charge of a motor vehicle arriving from any place outside or about to depart from Zimbabwe, to furnish a list of all persons in the aircraft, boat, train or motor vehicle, as the case may be, together with such other information as may be prescribed, and the person concerned shall comply with such requirements. (2) When it is desired to search the body of a woman in terms of paragraph (b) of subsection (1), the search, unless made by a medical practitioner, shall be made only by a woman and shall be conducted with strict regard to decency and, if there is no woman