SEOUL, South Korea - Officials from the two Koreas met Monday in North Korea to discuss their joint industrial complex just days after an exchange of gunfire at sea emphasized the constant security threat on the divided peninsula. North Korea lobbed dozens of shells toward the western sea border last week, prompting South Korea to respond with a barrage of warning shots. Pyongyang called it a military exercise, and South Korean officials reported no casualties or damage. Two no-sail zones ordered by North Korea early last week just before the fracas remain in place, and on Monday the Yonhap news agency in Seoul said Pyongyang issued notices for five new no-sail zones: four off the west coast and one off the east. The poorly marked sea border is a frequent source of tension between the Koreas. Their navies fought a skirmish in November that left one North Korean sailor dead and three others wounded, and engaged in bloodier battles in the area in 1999 and 2002. Despite the flare-up in tensions, officials met at the North Korean border town of Kaesong as scheduled to discuss how to further develop their joint factory park. Talks ended Monday without any significant progress. The sides agreed instead to discuss South Korea's perennial request that border crossings be eased for its workers at separate military talks, the Unification Ministry said in a statement. They also put off addressing the North's demand for wage hikes for its workers until the next round of working-level talks on the complex, the statement said. Since 2004, Kaesong has combined South Korean capital and know-how with cheap North Korean labor ��" a key symbol of cooperation between the wartime rivals.
