North Korea has cooperated fully with a team UN nuclear experts who were monitoring the shutdown and sealing of the country's sole plutonium-producing reactor, the leader of the team said Tuesday. The 10-member International Atomic Energy Agency team went to North Korea on July 12 to supervise the closing of the Yongbyon reactor, the key component of the North's nuclear program. "We have a full cooperation with the DPRK authorities," Adel Tolba told broadcaster APTN. The Democratic People's Republic of Korea is the formal name of North Korea. "We finished what was planned. Assessment will be done in Vienna," Tolba said on his departure from Pyongyang airport.