31 Article 43. Jurisdiction 1. Each State Party shall take all necessary measures to establish jurisdiction over offences and other unlawful acts established in accordance with this Convention, when they are committed: (a) in the territory of that State Party; or (b) onboard vessel that was flying the flag of that State Party when the offence was committed; or onboard aircraft registered under the law of that State Party at that time. 2. Subject to Article 3 of this Convention, a State Party may also establish its jurisdiction over any such offence and other unlawful act when: (a) offence is committed against a national of that State Party, stateless person permanently residing in its territory, legal person established or having a permanent representation in its territory, as well diplomatic mission and consular office of that State Party; or (b) offence is committed by a national of that State Party or a stateless person who has his or her habitual residence in its territory; or (c) 3. offence is committed against that State Party. For the purposes of Article 48 of this Convention, each State Party shall take all necessary measures to establish its jurisdiction over the offences established in accordance with this Convention when the alleged offender is in its territory and it does not extradite such person on the mere ground that he/she is one of its nationals or a person granted a refugee status by that State Party. 4. Each State Party, in the territory of which the alleged offender is present, and which does not extradite such person, shall, in cases provided for in paragraphs 1 and 2 of this Article, without any exception and regardless of whether the offence was committed in the territory of that State Party, without further delay submit the case to its competent authorities for the purpose of prosecution through proceedings in accordance with the law of that State.