(4)Notwithstanding anything contained in this section, imported goods or export goods may, prior to the examination or testing thereof, be permitted by the proper officer to be assessed to duty on the basis of the statements made in the entry relating thereto and the documents produced and the information furnished under sub-section (3); but if it is found subsequently on examination or testing of the goods or otherwise that any statement in such entry or document or any information so furnished is not true in respect of any matter relevant to the assessment, the goods may, without prejudice to any other action which may be taken under this Act, be re-assessed to duty.