North Korea has threatened to start military action if South continues "propaganda warfare", the Yonhap news agency reported Thursday.
Earlier in the day South Korea fired back dozens of artillery rounds after a North Korean rocket attack. According to South Korea's KBS broadcaster, which cites a local military official, the shelling was aimed at a military loudspeaker that has been blaring anti-Pyongyang broadcasts in recent days, and took place on the western portion of the border.
"Our side staged a counter-attack with dozens of 155mm shells," a ministry spokesman told AFP.
South & North Korea exchanged rocket & artillery fires across their border: South's Defense Ministry. It's their first armed clash in 5 yrs.— Alan Wong (@alanwongw) 20 августа 2015
According to Yonhap, North Korea has not yet responded to the move. South Korea will hold a National Security Council session to assess the situation.
No casualties or damage have been reported, but South Korea has ordered evacuation of civilians from the border area.
(URGENT) S. Korea orders civilian evacuation near attacked western border http://t.co/v6zDxLHROj— Yonhap News Agency (@YonhapNews) 20 августа 2015
The clash comes days after Seoul announced it would resume its propaganda operations at the border for the first time in 11 years, in retaliation for the landmine blasts that maimed two of its soldiers during a frontier patrol, South China Morning Post reports.