The missiles were fired from the southwest Hwanghae province and landed in the ocean.
China and S Korea have reportedly discussed joining forces for the 70th anniversary next year of Japan’s defeat in WW II.
North Korea might boycott the Asian Games if the drills go ahead in the same manner as in previous years.
The 1950-53 Korean War ended with an armistice and not a peace treaty.
Of the 325 students on a class trip to the southern holiday island of Jeju, 75 were rescued, 245 died and 5 are still missing.
Yim fled with his weapon, but it wasn’t clear how much live ammunition he had.
Kwon Yun-Ja, 72, was arrested at a flat in the southern suburbs of Seoul following a successful ambush, Yonhap news agency said.
Top Japanese officials protested the drills, but South Korean officials said the exercises were routine and rejected Tokyo’s demands to cancel them.
Commerce ministry called a meet on June 5 to deliberate a proposal to stop NMDC from exporting 2.5 million tonne iron ore to Japan and South Korea.
Police declined to provide further details, saying the cause of the fire was still being investigated.
Fire was suspected to have started during welding work in the basement of the building in Goyang city, north of Seoul.
South Korean navy fired warning shots to repel three North Korean warships that violated the disputed sea boundary.
The president’s plans require parliamentary approval, according to her office.
More than three weeks after the ferry sank, 29 passengers remain missing, 275 bodies recovered so far, most of them high school students.
Bodies were found late on Saturday in the inverted, submerged ship, bringing the confirmed death toll from the April 16 disaster to 275.