13. When the Customs authorities are satisfied that the goods covered by a SADC Transit Document have been destroyed by force majeure an exemption from payment of the duties shall be granted. ARTICLE 10 OBLIGATION OF MEMBER STATES AND SURETIES Subject t the provisions of Article 6 of this Annex, the obligations of Member States and sureties are as follows: a) Each Member state undertakes to facilitate the transfer to the other Member States of the funds necessary for payment of premiums or other charges claimed from sureties under the provisions of this Annex, or for payments of any penalties which the transistor may incur in the event of an offence being committed in the course of transit transport operations. b) The Member States agree to ensure that the liabilities undertaken by sureties cover import or export duties due, any interest thereon, and other charges and financial penalties incurred by the holder of a SADC Transit Document and other persons involved in the transit transport operation under the Customs Laws and regulations of the Member State in which an offence has been committed. The surety and the persons charged with the offence shall be jointly and severely liable for payment of such sums. The fact that Customs authorities might have authorised the examination of goods elsewhere than at a place where the business of the Customs office of commencement or destination is usually conducted shall not affect the liability of the surety. c) For the purpose of determining the duties referred to in paragraph (b) of this Article, the