Printing Presses and Publications 17 (a) a printing press kept or used in contravention of section 3; (b) any newspaper printed or imported or published in contravention of section 5; or (c) any prohibited publication. (2) Whenever it appears to any senior authorized officer that there is reasonable ground to believe that there is concealed or deposited in any premises any prohibited publication, and that by reason of the delay in obtaining a search warrant the object of the search is likely to be frustrated, he may enter and search the premises as if he were empowered to do so by a warrant issued under subsection (1). Power to open package 17. Any authorized officer may detain, open and examine any package or article which he suspects to contain any prohibited publication or any publication liable to be prohibited under subsection 7(1). Power of seizure or detaining printing press or publication 18. Any officer acting pursuant to section 16 or 17 is empowered to seize and detain— (a) any printing press or publication or any other article which he has reason to believe to be evidence of the commission of any offence under this Act or any rules made thereunder; (b) any publication which he suspects to be a publication which is liable to be prohibited under subsection 7(1) or is liable to be refused importation, withheld from delivery or returned to sender under subsection 9(1).