Section 5(1)(v) in The Special Economic Zones (Customs Procedures) Regulations, 2003
(v)after assessments of bill of entry, original copy of the bill of entry shall be retained by the Custom officers in the zone and the remaining copies shall be handed over to the representative of the zone unit for presenting at the airport detention counter where goods shall be allowed clearance after receiving the original detention receipt, authorization from the zone unit and making entries in the warehouse register, detention receipt register and obtaining signatures from the authorised representative of the zone unit;