an organized criminal group and the person who is the subject of the request for extradition is located in the territory of the requested State Party, provided that the offence for which extradition is sought is punishable under the domestic law of both the requesting State Party and the requested State Party. 2. If the request for extradition includes several separate serious crimes, some of which are not covered by this article, the requested State Party may apply this article also in respect of the latter offences. 3. Each of the offences to which this article applies shall be deemed to be included as an extraditable offence in any extradition treaty existing between States Parties. States Parties undertake to include such offences as extraditable offences in every extradition treaty to be concluded between them. 4. If a State Party that makes extradition conditional on the existence of a treaty receives a request for extradition from another State Party with which it has no extradition treaty, it may consider this Convention the legal basis for extradition in respect of any offence to which this article applies. 5. States Parties that make extradition conditional on the existence of a treaty shall: (a) At the time of deposit of their instrument of ratification, acceptance, approval of or accession to this Convention, inform the Secretary-General of the United Nations whether they will take this Convention as the legal basis for cooperation on extradition with other States Parties to this Convention; and (b) If they do not take this Convention as the legal basis for cooperation on extradition, seek, where appropriate, to conclude treaties on extradition with other States Parties to this Convention in order to implement this article. 6. States Parties that do not make extradition conditional on the existence of a treaty shall recognize offences to which this article applies as extraditable offences between themselves. 7. Extradition shall be subject to the conditions provided for by the domestic law of the requested State Party or by applicable extradition treaties, including, inter alia, conditions in relation to the minimum penalty requirement for extradition and the grounds upon which the requested State Party may refuse extradition. 8. States Parties shall, subject to their domestic law, endeavour to expedite extradition procedures and to simplify evidentiary requirements relating thereto in respect of any offence to which this article applies. 17