North Korea said on Sunday it is searching for the body a South Korean official killed by its troops, but warned that South Korean naval operations in the area threatened to raise tensions by intruding across a disputed sea border.

North Korea expressed regret on Friday for having shot dead a South Korean man to prevent the spread of coronavirus, the South's national security adviser said, amid growing public and political outrage.

North Korea threatened to take revenge on South Korea in retaliation for a leafletting campaign along the border, in a statement made by Kim Yo Jong, North Korean leader Kim Jong Un's sister.

North Korean leader Kim Jong Un hosted a meeting to discuss the country's nuclear capabilities, state media said on Sunday, marking his first appearance in three weeks after a previous absence sparked global speculation about his health.

Satellite imagery showing recent movements of luxury boats often used by North Korean leader Kim Jong Un and his entourage near Wonsan provide further indications he has been at the coastal resort

Kim Jong Un may have missed a key holiday on April 15 because of concerns over the coronavirus, not because he is ill, South Korea's minister for North Korean affairs said on Tuesday.

South Korean officials are calling for caution amid reports that North Korean leader Kim Jong Un may be ill or is being isolated because of coronavirus concerns, emphasising that they have detected no unusual movements in North Korea.

North Korean leader Kim Jong Un has declared an end to moratoriums on nuclear and intercontinental ballistic missile tests and threatened a demonstration of a "new strategic weapon" soon.

US President Donald Trump on Tuesday brushed off North Korea's warning of a "Christmas gift", saying the United States would "deal with it very successfully,"

North Korea said on Monday it was willing to restart nuclear talks with the United States in late September

President Donald Trump said on Friday he had just received a "very beautiful letter" from North Korean leader Kim Jong Un and added that he could have another meeting with him.

President Donald Trump on Friday underlined his intense personal support for North Korean leader Kim Jong Un, even if he admitted that Pyongyang's recent missile tests "may" violate a UN resolution.