But North Korean state media have in recent days reported several visits by leader Kim Jong-un to military units near the disputed western maritime border, including near Yeonpyeong island.
On Sunday North Korea's new leader Kim Jong-un visited front-line military units, including one said to be responsible for an attack on the South Korean island of Yeonpyeong in 2010.
The Indian units that make up the core of the UN force in the area under attack have given up on the Congolese army, which has disintegrated in the face of rebels from the Tutsi group.