OECD Convention : Article 10 : Extradition

Bribery of a foreign public official shall be deemed to be included as an extraditable offence under the laws of the Parties and the extradition treaties between them.
If a Party which makes extradition conditional on the existence of an extradition treaty receives a request for extradition from another Party with which it has no extradition treaty, it may consider this Convention to be the legal basis for extradition in respect of the offence of bribery of a foreign public official.
Each Party shall take any measures necessary to assure either that it can extradite its nationals or that it can prosecute its nationals for the offence of bribery of a foreign public official. A Party which declines a request to extradite a person for bribery of a foreign public official solely on the ground that the person is its national shall submit the case to its competent authorities for the purpose of prosecution.
Extradition for bribery of a foreign public official is subject to the conditions set out in the domestic law and applicable treaties and arrangements of each Party. Where a Party makes extradition conditional upon the existence of dual criminality, that condition shall be deemed to be fulfilled if the offence for which extradition is sought is within the scope of Article 1 of this Convention.