International Atomic Energy Agency (IAEA) inspectors arrived at the site on 28 June to discuss verification and monitoring arrangements for the shutdown. This had been delayed from April due to a dispute with the United States over Banco Delta Asia. On 3 June an anonymous South Korean government official indicated that the shutdown may start following the first oil shipment later in the month. On 14 July, Sean McCormack stated that North Korea had told the US that the reactor had been shut down. He added that the US welcomed the news, and was awaiting verification from the IAEA team. The next day, IAEA chief Mohamed ElBaradei announced the UN's confirmation that the reactor had been shut down. On 18 July 2007, the IAEA confirmed that all five nuclear facilities at Nyongbyon had been shut down.