2. A person extradited under this Treaty may not be the subject of onward extradition or surrender for any offense committed prior to extradition to the Requesting State unless the Requested State consents.
3. Paragraphs 1 and 2 of this Article shall not prevent the detention, trial, or punishment of an extradited person, or the extradition of the person to a third State, if the person:
| (a) | leaves the territory of the Requesting State after extradition and voluntarily returns to it; or |
| (b) | does not leave the territory of the Requesting State within 20 days of the day on which that person is free to leave. |
4. If the person sought waives extradition pursuant to Article 17, the specialty provisions in this Article shall not apply.
Article 19
Transit
1. Either State may authorize transportation through its territory of a person surrendered to the other State by a third State or from the other State to a third State. A request for transit shall contain a description of the person being transported and a brief statement of the facts of the case. A person in transit shall be detained in custody during the period of transit.
2. Authorization is not required when air transportation is used by one State and no landing is scheduled on the territory of the other State. If an unscheduled landing does occur, the State in which the unscheduled landing occurs may require a request for transit pursuant to paragraph 1 of this Article, and it may detain the person until the request for transit is received and the transit is effected, as long as the request is received within 96 hours of the unscheduled landing.
Article 20
Representation and Expenses
1. The Requested State shall advise, assist, and appear on behalf of, the Requesting State in any proceedings in the courts of the Requested State arising out of a request for extradition or make all necessary arrangements for the same.
2. The Requesting State shall pay all the expenses related to the translation of extradition documents and the transportation of the person surrendered. The Requested State shall pay all other expenses incurred in that State in connection with the extradition proceedings.
