Newest transfer comes after Pyongyang accused South Korea of sending drones carrying propaganda leaflets over its capital.
North Korea has blown up the northern sections of the roads that join it to South Korea, in response to South Korea’s army.
Some elements of the street north of the army demarcation line dividing the international locations had been blown up at about noon (03:00 GMT), the Joint Chiefs of Employees mentioned in a message despatched to media on Tuesday.
The army fired warning photographs south of the demarcation line, it mentioned.
Seoul had warned on Monday that Pyongyang was getting ready to explode the roads.
Tensions on the Korean Peninsula have risen since North Korea accused its neighbour of sending drones carrying propaganda leaflets over the nation’s capital Pyongyang.
The explosions got here a day after North Korean chief Kim Jong Un referred to as a gathering along with his high army and safety officers to debate the problem.
In the course of the assembly, Kim described the flights because the “enemy’s critical provocation” and laid out unspecified duties associated to “instant army motion” and the operation of his “battle deterrent” for defending the nation’s sovereignty, North Korean state media reported earlier on Tuesday.
North Korea earlier put frontline artillery and different military items on standby to launch assaults on South Korea, if its drones had been discovered over North Korea once more. South Korea has refused to verify whether or not it despatched drones however warned it will sternly punish North Korea if the protection of its residents was threatened.
Destroying the roads could be in keeping with Kim Jong Un’s push to chop off ties with South Korea, formally cement it as his nation’s principal enemy and abandon North Korea’s decades-long goal to hunt a peaceable Korean unification.
In 2020, North Korea blew up the liaison workplace for the 2 Koreas, signalling the tip of a interval of detente.
In November final yr, Pyongyang mentioned it will transfer extra troops and army gear to the border and would not be certain by a 2018 joint military agreement after Seoul suspended elements of the settlement in response to Pyongyang’s launch of a army spy satellite tv for pc.
South Korean officers have mentioned that North Korea started including antitank limitations and laying mines alongside the border earlier this yr.