South Korea and the United States are waging a smear campaign against North Korea to distract from their own records of human rights abuses, Pyongyang has complained to the United Nations, warning that "curses, like chickens, come home to roost."

In a letter to U.N. Secretary-General Ban Ki-moon — dated May 7 and released on Tuesday- North Korea's U.N. Ambassador Ja Song Nam included analyses by the reclusive Asian state of the human rights records of the United States and South Korea.

"It is none other than the U.S. that should be brought to the dock for the human rights violations it committed," according to the North Korean 'Memorandum on United States crimes against human rights.'