[2.
(b)
(ii) the offence is committed on board a ship or aircraft which
is registered under its laws at the time the offence is committed;
may take such measures as may be necessary to establish its jurisdiction over the offences it has established in accordance with article 2, paragraph 1, when:
(i)
(ii)
(iii)
the offence is committed by a national, or a person who has his habitual residence in its territory;
the offence is committed on board a ship which that Party has received prior permission to seize pursuant to article 12, provided that such jurisdiction shall be exercised only on the basis of agreements or arrangements referred to in paragraphs 5 and 7 of that article;
the offence is one of those defined in article 2, paragraph 1, subparagraph (b)(iii) and is committed outside its territory with a view to the commission, within its territory, of an offence set forth in article 2, paragraph 1.
Each Party shall also take measures as may be necessary to establish its jurisdiction over the offences it has established in accordance with article 2, paragraph 1, when the alleged offender is found in its territory and it does not extradite him
.}
3. This convention does not exclude any criminal jurisdiction exercised in accordance with domestic law.
Article 6
OTHER FORMS OF CO-OPERATION AND TRAINING
1. The Parties shall co-operate closely with each other, consistent with their respective national legal and administrative systems, with a view to enhancing the effectiveness of law enforcement action to suppress the illicit traffic. They shall, in particular:
(3) Establish and maintain channels of communication between competent national agencies and services to facilitate the secure and rapid exchange of information concerning all aspects of illicit traffic, including, if the Parties concerned deem it appropriate, links with other criminal activities.
(b)
Co-operate with one another in conducting enquiries with respect to the illicit traffic at the international level, the identification, whereabouts and activities of traffickers, and the movement of property that may be derived from or used in the illicit traffic.