A second team of U.N. nuclear experts traveled to North Korea Saturday to monitor the shutdown and sealing of the country's only plutonium-producing reactor.
The team will replace an initial group that went to North Korea July 12 to supervise the shutdown of the Yongbyon reactor.
North Korea shut down five key nuclear facilities at its main Yongbyon complex earlier this month as part of a six-nation agreement reached in February to disable Pyongyang's nuclear weapons programs.
According to the deal, North Korea will declare all of its nuclear programs and dismantle them in exchange for fuel aid and political benefits.
Technical experts are preparing to meet in August to decide the next steps North Korea should take to completely shut down all of its facilities.
The next round of six-party talks is scheduled to be held in September.
Some information for this report was provided by AP and Reuters.