Seoul, March 10 -- North Korea has fired unidentified ballistic missiles, the South Korean military said on Monday according to local media.

South Korea's Joint Chiefs of Staff said the military spotted the ballistic missiles at around 1:50 pm fired from inland in north Korea's Hwanghae region and the projectiles flew toward the Yellow Sea, Yonhap reported.

The JCS said it has bolstered surveillance and maintained a full readiness posture under close cooperation with the United States.

The development comes as troops of South Korea and the US began their annual combined drills the 'Freedom Shield' exercise, which was paused after the accidental bombing of a civilian village by fighter jets last week.

Two KF-16 fighter jets "abnormally...