North Korea fired off four short-range projectiles on Wednesday, according to South Korea's Joint Chiefs of Staff.
Only one of the four fired in two rounds is believed to have landed in the East Sea in the second test of its kind in under a week.
And in a related event, the United Nations Security Council is reportedly meeting next Tuesday, to discuss North Korea's recent missile launches.
Citing government sources, Yonhap News Agency reports that the council will be briefed by the UN sanctions committee, which was established in 2006 after North Korea's first nuclear test.
They update the Council every 90 days.