5. A Member State of transit may decide that the shipment may not be completed if the conditions for shipment are no longer complied with in accordance with this Directive, or are not in accordance with the authorisations or consents issued pursuant to this Directive. Such Member State shall forthwith inform the competent authorities of the country of origin of this decision. The person responsible referred to in paragraph 1 shall be liable for costs arising in cases where the shipment cannot or may not be completed.