The Joint Chiefs of Staff announced the launch. It did not immediately provide other details, Yonhap news agency reported.
On Sunday, the North launched what Seoul officials called two medium-range ballistic missiles into the East Sea. It later claimed the launch was a reconnaissance satellite development effort, the news agency reported.
This year alone, North Korea launched ballistic missiles 38 times, with a total of 67 missiles fired. In addition, Pyongyang tested cruise missiles three times, reports UNI.