20.—(1) Any person who aids, abets, counsels or induces the commission in a place outside the State of an offence punishable under a corresponding law in force in that place shall be guilty of an offence.

(2) In this section “a corresponding law” means a law stated in a certificate purporting to be issued by or on behalf of the government of a country outside the State to be a law providing for the control or regulation in that country of the manufacture, production, supply, use, exportation or importation of dangerous or otherwise harmful drugs in pursuance of any treaty, convention, protocol or other agreement between states and prepared or implemented by, or under the auspices of, the League of Nations or the United Nations Organisation and which for the time being is in force.

(3) Any statement in a certificate mentioned in subsection (2) of this section as to the effect of the law mentioned in the certificate or any such statement that any facts constitute an offence against the law so mentioned shall, for the purposes of any proceedings under this Act, be evidence of the matters stated.