North Korea fired three ballistic missiles into the sea off its east coast on Monday, said South Korea, as the leaders of the Group of 20 major economies held a summit in China, the North's main diplomatic ally.
The missiles were fired from a western region south of the capital Pyongyang, just after noon local time (0300 GMT), South Korea's Office of the Joint Chiefs of Staff said in a statement.
The missile launches were the latest in a series of launches by the isolated North
this year in violation of U.N. Security Council resolutions
The South's military was trying to determine the type of missiles launched, a military official said. No other details were immediately available.
The missiles were launched from a region called Hwangju and came just hours after the leaders of South Korea and China met on the sidelines of the Group of 20 leaders' meeting in Hangzhou, China.
South Korean President Park Geun-hye told Chinese President Xi Jinping that the North's fourth nuclear test and its ballistic missile launches this year threatened regional peace and posed a challenge to South Korea's ties with China, Yonhap news agency reported earlier.