South Korean soldiers broadcast warnings and fired warning shots at about 10 North Korean soldiers who were approaching the military demarcation line inside the Demilitarised Zone that bisects the Korean Peninsula, according to a statement from South Korea's Joint Chiefs of Staff.
Two shots believed to have been fired by North Korean soldiers were found at a South Korean guard post, and South Korean soldiers fired toward the North, the statement said.
On Oct 10, the two Koreas also traded gunfire along the border after South Korean activists floated balloons carrying anti-Pyongyang propaganda leaflets toward the North. There were no reports of casualties from that incident either.
North Korea has repeatedly demanded South Korea ban activists from sending leaflets, which often urges North Korean citizens to rise up against leader Kim Jong Un South Korea has refused, saying activists are exercising freedom of speech.
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North Korea has warned it would take unspecified stronger measures if leafleting continues. South Korean activists said they won't yield to the North's threats and vowed to float more leaflets across the border. One activists' group said it will send about 50,000 leaflets on Oct 25.
Only days after the North Koreans' visit, navy ships of the two Koreas also traded gunfire near their disputed western sea border, the scene of several bloody maritime skirmishes in recent years. Military generals from the sides met at a border village last week in their first military talks in more than three years to discuss how to ease tensions, but the meeting ended with no agreement including when to meet again.