North Korea fired one short-range ballistic missile (SRBM) into the East Sea on Sunday, South Korea's military said.
It detected the launch from the Ryongsong area in Pyongyang at 2:50 am, adding that the missile flew some 400 km before splashing into the sea, the South Korean News Agency (Yonhap) quoted the Joint Chiefs of Staff (JCS) as saying.
Yonhap indicated that this appears to be another response to Seoul's test launch of a homegrown solid-propellant space rocket on Friday.
On Saturday morning, the North shot three SRBMs from Chunghwa County, just south of Pyongyang, into the East Sea.
The JCS denounced the North's latest missile launch as an act of "significant provocation" that harms peace and stability not only on the Korean Peninsula but also in the international community, and a "clear" breach of UN Security Council resolutions.
"Our military will maintain a solid readiness posture based on capabilities to respond overwhelmingly to any North Korean provocations," the JCS said in a statement.
North Korea launched about 70 ballistic missiles last year alone, including about eight ICBMs.
