North Korea is denying that it planted land mines that injured two South Korean soldiers last week and prompted Seoul to restart propaganda broadcasts across the border for the first time in 11 years.

North Korea's powerful National Defense Commission said Friday it "makes no sense" that it buried mines on the southern side of the border because it only uses such devices for defense.

Investigations by Seoul and the U.S.-led U.N. Command blamed Pyongyang for the mines that exploded when soldiers were on a routine patrol near a wire fence in the southern side of the border. One of the soldiers lost both legs while the other lost one leg.

Officials said the mine planting violates the armistice that ended the Korean War.