Meanwhile, it looks like North Korea's rocket is ready for launch.
A South Korean official said all three stages of the long-range rocket have been assembled on the launch pad.
Pyongyang is now expected to install support equipment like radars and cameras, before fueling the rocket.
Officials say.. with the latest preparations.. the rocket could be launched early next week.
The planned launch will be North Korea's second launch attempt under current leader Kim Jong-un.
The first attempt was back in April.