 In order to find answers to the inconsistencies detected and to determine the completeness and correctness of the initial declaration provided, the IAEA requested access to additional information and to two sites which seemed to be related to the storage of nuclear waste.The DPRK refused access to the sites, and on 12 March 1993, North Korea announced its decision to withdraw from the NPT.On 1 April 1993, the IAEA concluded that North Korea was in non-compliance with its Safeguards Agreement, and referred this to the UN Security Council.