The JCS said it detected the launches from the Sunan area in Pyongyang at around 6 a.m., 6:37 a.m. and 6:42 a.m. local time, respectively, which marked the 17th projectile launch by the DPRK this year.
The JCS noted that South Korea was maintaining a full readiness posture in close cooperation with the United States while reinforcing surveillance and vigilance.
According to Yonhap news agency, the U.S. Indo-Pacific Command said in a press release that being aware of the multiple DPRK ballistic missile launches, it was assessing and consulting closely with its allies and partners.
South Korean President Yoon Suk-yeol presided over a meeting of the National Security Council (NSC) over the DPRK's ballistic missile launch, the presidential office said.
The DPRK test-launch came just a day after U.S. President Joe Biden wrapped up his Asia trip to South Korea and Japan.