37 8. The States Parties shall, subject to their domestic law, endeavor to expedite extradition procedures and to simplify evidentiary requirements relating thereto in respect of any offence to which this Article applies. 9. Subject to the provisions of its domestic law and its extradition treaties, the requested State Party may, upon being satisfied that the circumstances so warrant and are urgent and at the request of the requesting State Party, take a person whose extradition is sought and who is present in its territory into custody or take other appropriate measures to ensure his/her presence at extradition proceedings. 10. A State Party in whose territory an alleged offender is found, if it does not extradite such a person in connection with an offence to which this Article applies shall, without any exception, at the request of the State Party seeking extradition, be obliged to submit the case without undue delay to its competent authorities for the purpose of prosecution. Those authorities shall take their decision and conduct their proceedings in the same manner as in the case of any other offence of a grave nature under the domestic law of that State Party. The States Parties concerned shall cooperate with each other, in particular on procedural and evidentiary issues, to ensure the efficiency of such a prosecution. 11. Whenever a State Party is permitted under its domestic law to extradite or otherwise surrender one of its nationals only upon the condition that the person will be returned to that State Party to serve the sentence imposed as a result of the trial or proceedings for which the extradition or surrender of the person was sought and that State Party and the State Party seeking the extradition of the person agree with this procedure and other terms that they may deem appropriate, such conditional extradition or surrender shall be sufficient to discharge the obligation set forth in paragraph 10 of this Article. 12. Any person regarding whom the proceedings are being carried out in connection with any of the offences to which this Article applies shall be