South Korea¡¯s Joint Chiefs of Staff (JCS) said on Sunday that warning shots had been fired when North Korean soldiers violated ?the military demarcation line between the ?countries, ?prompting them to return.

The Yonhap ?news agency reported earlier on Sunday that warning shots had been fired last ?week, citing an unnamed source.

¡°Recently, on the Eastern Front, ?North Korean forces crossed the military demarcation line, prompting our ?military to fire warning shots ?according to operational procedures,¡± a JCS statement said without giving ?the date ?of the incident.

¡°Our military ?is closely monitoring North Korean movements while ?maintaining ?a firm military readiness posture.¡±

Yonhap said the incident was the first reported violation of the military demarcation line ?by North Korea this year and that the soldiers were likely to have been patrolling the area when they crossed the ?MDL.

The ?North Korean Embassy in Singapore ?did not respond immediately to a request ?for comment.

North Korean troops violated the line 17 times last year, Yonhap said.

The two Koreas are technically at war ?after their 1950 to 1953 war ended in an armistice rather than a peace treaty.??