—(1) A licensing officer or any public officer authorised in writing by a licensing officer or any police officer not below the rank of sergeant may enter at all reasonable times upon any premises in which poisons are reasonably believed by that officer to be kept or stored and by himself or by some other person accompanying him and acting under his instructions and in his presence may search the premises and take possession of any substances found therein and reasonably believed to be or to contain a poison.
(2) Any officer referred to in subsection (1) may in like manner inspect and take extracts from any book or record relating or reasonably believed to relate to any dealing in or with poisons wherever and by whomsoever kept and whether kept under the provisions of this Act or of any rules made thereunder or otherwise and for the purpose of such inspections or taking of extracts may enter at all reasonable times upon any place whatsoever.
(3) In any case in which it appears to any magistrate upon the oath of any person that there is reasonable cause to believe that in any premises there is concealed or deposited any substance in respect of which an offence has been committed under this Act, the magistrate may, by warrant addressed to any police officer not below the rank of sergeant or to any senior officer of customs within the meaning of the Customs Act (Cap. 70), empower the officer to enter upon and search by day or night any premises and to take possession of any substance and to arrest any person being in the premises in whose possession the substance may be found or who is reasonably suspected by the officer to have concealed or deposited the substance therein.
(4) Any officer to whom the warrant may be directed may in case of obstruction or resistance break open any outer or inner door of the premises and any cupboard, chest, trunk or package or other receptacle and by force, if necessary, enter upon any part of the premises and remove any obstruction to such entry, search or seizure and detain any person found in the premises until the search has been completed.