North Korea's state TV broadcasts a repeated threat to shut down the joint Kaesong industrial zone.
(SOUNDBITE) (Korean) UNNAMED KRT NEWS READER SAYING:
"If the South's puppet conservative group and its media continue bad-mouthing, then we will take the stern measure of pulling out all of our workers from the Kaesong industrial zone."
Over 120 South Korean firms operate factories in the shared zone about 3 miles inside North Korea.
More than 50,000 North Koreans are employed there. Pulling them out of the factories would effectively shut down the complex.
Meanwhile, South Korea's Defense Minister confirmed on Thursday that North Korea has moved what is believed to be a mid-range missile to its east coast, seen as part of military drills.
It is believed to have a range of 3,000 km or more, which would put all of South Korea and Japan in the rocket's sights and possibly also the U.S. territory of Guam in the Pacific Ocean.
Independent experts sai