North Korea's official Korean Central News Agency said the tests lasted three days starting Monday and also included demonstrations of anti-aircraft weapons, purported electromagnetic weapons systems and carbon-fiber bombs.

The report by North Korean state media came a day after South Korea's military said it detected North Korea firing multiple missiles from an eastern coastal area in its second round of launches in two days.

The report by North Korean state media came a day after South Korea's military said it detected North Korea firing multiple missiles from an eastern coastal area in its second round of launches in two days.