This is the shocking moment North Korea blew up roads linking the police state to South Korea.

Footage shows a blast ripping through parts of the road north of the military demarcation line on October 15.

South Korean unification ministry spokesman koo Byoung-sam said: 'It is deplorable that North Korea is repeatedly conducting such regressive behaviour.'

Tensions on the Korean Peninsula were mounting after North Korea accused its neighbour of sending drones to distribute propaganda leaflets and K-Pop songs over Pyongyang. It sent over rubbish-laden balloons in response.

North Korean leader Kim Jong Un also called South Korea a 'primary foe' earlier this year, saying unification with it was no longer possible.