The Extradition (Drug Trafficking) Order 1997

Article 4 Jurisdiction

1.  Each Party:

(a) Shall take such measures as may be necessary to establish its jurisdiction over the offences it has established in accordance with Article 3, paragraph 1, when:

(i) The offence is committed in its territory;

(ii) The offence is committed on board a vessel flying its flag or an aircraft which is registered under its laws at the time the offence is committed;

(b) May take such measures as may be necessary to establish its jurisdiction over the offences it has established in accordance with Article 3, paragraph 1, when:

(i) The offence is committed by one of its nationals or by a person who has his habitual residence in its territory;

(ii) The offence is committed on board a vessel concerning which that Party has been authorized to take appropriate action pursuant to Article 17, provided that such jurisdiction shall be exercised only on the basis of agreements or arrangements referred to in paragraphs 4 and 9 of that article;

(iii) The offence is one of those established in accordance with Article 3, paragraph 1, subparagraph (c)(iv), and is committed outside its territory with a view to the commission, within its territory, of an offence established in accordance with Article 3, paragraph 1.

2.  Each Party:

(a) Shall also take such measures as may be necessary to establish its jurisdiction over the offences it has established in accordance with Article 3, paragraph 1, when the alleged offender is present in its territory and it does not extradite him to another Party on the ground:

(i) That the offence has been committed on its territory or on board a vessel flying its flag or an aircraft which was registered under its law at the time the offence was committed; or

(ii) That the offence has been committed by one of its nationals;

(b) May also take such measures as may be necessary to establish its jurisdiction over the offences it has established in accordance with Article 3, paragraph 1, when the alleged offender is present in its territory and it does not extradite him to another Party.

3.  This Convention does not exclude the exercise of any criminal jurisdiction established by a Party in accordance with its domestic law.