"Three ballistic missiles, which were fired from one location, reached simultaneously Japan's exclusive economic zone and fell into almost the same spot in the sea. Earlier [on August 24] a ballistic missile was launched from a submarine. All this shows progress in North Korea's missile technologies," Inada said.
She also stressed that her country should react to the constantly repeated missile launches by North Korea. Japan should boost cooperation with the United States in missile defense in this context, she added.
North Korea is currently under pressure from the international community since its January nuclear test and a long-range rocket launch in February, which resulted in tightening sanctions against Pyongyang in the new UN Security Council resolution in March.