No. 3 Electronic and Postal Communications 2010 45 (2) Except as otherwise provided by regulations made under this Act and subject to the condition as may be prescribed, no person shall send by post any explosive, inflammable, dangerous, filthy, noxious or deleterious substance, any sharp instrument not properly protected, or any living creature which is either noxious or likely to injure any person or any postal article in course of transmission by post. (3) No person shall send by post opium, morphine, cocaine or any narcotic except under such rules as the Authority may make in this behalf. (4) Nothing in this section shall affect the provisions of any written law relating to deleterious drugs. Prohibition of transmission by post of anything indecent 53. A person shall not send by post any (a) indecent or obscene printing, painting, photograph, lithograph, engraving, book or card, or any other indecent or obscene article; (b) (c) (d) Authority to make rules dealing with prohibited articles postal article having or on the cover, have any words marks or designs of any indecent, obscene, seditious, scurrilous, threatening or grossly offensive character; postal article bearing any fictions stamp or purporting to be prepaid with any postage stamp which has previously been used to prepay any other postal article or which has been previously used in payment of any stamp duty; or other article which the Authority may prohibit. 54. The Authority may make rules for preventing the sending and delivery of articles prohibited under this Act and detaining, disposing of, or destroying any such postal article sent or tendered for transmission by post.