Pyongyang said on Tuesday it will sever hotlines with South Korea as a first step toward shutting down all contact with Seoul, North Korea's state-run Korean Central News Agency reported.

For several days, North Korea has lashed out at South Korea, threatening to close an inter-Korean liaison office and other projects if the South does not stop defectors from sending leaflets and other material into the North.

Top government officials in North Korea, including leader Kim Jong Un's sister, Kim Yo Jong, and Kim Yong Chol, vice-chairman of the Central Committee of the ruling Workers' Party of Korea, determined "that the work towards the South should thoroughly turn into the one against an enemy," KCNA said.