South Korea says the North has fired three ballistic missiles from a western region in the capital Pyongyang into the Sea of Japan.
South Korea's Office of Joint Chiefs of Staff said that the missiles were fired on Monday but there were no more details available in the statement.
The alleged missile launch was carried out hours after the leaders of South Korea and China met on the sidelines ofthe summit of leaders from G20 nations in the Chinese town of Hangzhou.
South Korean PresidentPark Geun-hye said at the meeting with her Chinese counterpart Xi Jinping that Pyongyang’s nuclear test and missile launches posed a challenge to Seoul’s ties with Beijing.
She said Pyongyang’s “provocations” gravely damaged peace and stability on the Korean Peninsula and in Northeast Asia, according to South Korea’s Yonhap news agency.
Inter-Korean relations have become tense after a final decision was made last month to deploy the US Terminal High Altitude Area Defense (THAAD) missile system in the South Korean territory.
China, which is Pyongyang’s major ally, has repeatedly warned that it would take measures against the THAADdeployment in a base south of Seoul.
Beijing insists the system will threaten security and stability on the Korean Peninsula and put Chinese military assets within the range of US radars. It has called on Seoul to “think twice” about its decision.
Washington and Seoul, however, claim the system will only be used in confronting what they call North Korean threats.
THAAD, which is planned to be installed by the end of next year, has been designed to intercept ballistic missiles inside or just outside the atmosphere during their final phase of flight.