communications in its territory through the application of technical means on that territory. 3 Each Party shall adopt such legislative and other measures as may be necessary to oblige a service provider to keep confidential the fact of the execution of any power provided for in this article and any information relating to it. 4 The powers and procedures referred to in this article shall be subject to Articles 14 and 15. Section 3 – Jurisdiction Article 22 – 1 Jurisdiction Each Party shall adopt such legislative and other measures as may be necessary to establish jurisdiction over any offence established in accordance with Articles 2 through 11 of this Convention, when the offence is committed: a in its territory; or b on board a ship flying the flag of that Party; or c on board an aircraft registered under the laws of that Party; or d by one of its nationals, if the offence is punishable under criminal law where it was committed or if the offence is committed outside the territorial jurisdiction of any State. 2 Each Party may reserve the right not to apply or to apply only in specific cases or conditions the jurisdiction rules laid down in paragraphs 1.b through 1.d of this article or any part thereof. 3 Each Party shall adopt such measures as may be necessary to establish jurisdiction over the offences referred to in Article 24, paragraph 1, of this Convention, in cases where an alleged offender is present in its territory and it does not extradite him or her to another Party, solely on the basis of his or her nationality, after a request for extradition. 4 This Convention does not exclude any criminal jurisdiction exercised by a Party in accordance with its domestic law. 5 When more than one Party claims jurisdiction over an alleged offence established in accordance with this Convention, the Parties involved shall, where appropriate, consult with a view to determining the most appropriate jurisdiction for prosecution. Chapter III – International co-operation 47