North Korean leader Kim Jong Un guided a special operations drill targeting the South, the North's media reported on Sunday, as rival South Korea remained on alert for any attempt by the North to take advantage of political turmoil in the South.

The North's KCNA state news agency report did not say when North Korean forces conducted the combat exercise, nor did it mention the South Korean parliament's vote on Friday to impeach its president, Park Geun-hye.

Pictures in a Sunday report on the exercise in the North's Rodong Sinmun newspaper showed what appeared to be a mockup of South Korea's presidential Blue House as a target.