YONGSAN GARRISON, South Korea — An explosion near the North-South Korean border last weekend was not caused by a South Korean mortar round, the United Nations Command Military Armistice Commission said Thursday in a news release.

Earlier this week, North Korea’s government accused the South of firing a round into the north near Tongil Observatory, according to the U. N. command.

“The United Nations Command Military Armistice Commission and ROK military authorities immediately conducted a thorough investigation and found no evidence to substantiate the (Korean Peoples Army) claim,” the statement read in part.

Explosions near the Demilitarized Zone - a 2.5 mile wide area separating the two Koreas - are common because of the land mines remaining from the Korean War, according to the U.N. command.

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