The rockets were fired off the North’s eastern coast and flew about 40 milesinto the Sea of Japan, said a ministry spokesman.
He said: “Following the North’s rocket launch at 6.20pm (9.20am GMT), our military has maintained a close watch for possible North Korean provocations.”
The Yonhap news agency earlier reported that 10 short-range missiles were fired. South Korean troops have increased vigilance following a series of launches of rockets or missiles.
The activity coincides with annual South Korean-US military exercises that started in February and will run until mid-April.
Pyongyang routinely condemns such joint exercises as rehearsals for an invasion, while Seoul and Washington say they are purely defensive.
source: Guardian UK