The Democratic People's Republic of Korea (DPRK) fired multiple ballistic missiles, including an intercontinental ballistic missile, toward its eastern waters on Thursday, Yonhap News Agency reported, citing the Republic of Korea's (ROK) military.

The launches came a day after the DPRK fired a daily record 23 missiles, including one that landed off the coast of the ROK for the first time.

Since Monday, the ROK and the United States have been conducting one of the largest air exercises ever, with hundreds of the ROK's and U.S. warplanes, including F-35 fighters.

After DPRK's missile launches, the air forces of the ROK and the U.S. have agreed to extend their ongoing joint air drills "Vigilant Storm" in response, according to Yonhap.

"A strong combined defense posture of the ROK-U.S. alliance is necessary under the current security crisis that is escalating due to DPRK's provocations," the ROK's Air Force said in a statement.

(With input from Reuters)

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