South Korea has fired multiple missiles in response to North Korea's earlier intercontinental ballistic missile (ICBM) launch, its military has said.
Japan's coast guard earlier said North Korea launched a projectile which landed inside Japan's exclusive economic zone (EEZ), 170 km (106 miles) west of Aomori prefecture in northern Japan, at 3.44 pm (6.44am GMT).
The South Korean military said that it was ready and capable of precision strikes against the location where North Korea launched its missile, if needed, after it conducted a live-fire test of multiple ballistic and tactical missiles in what it called an immediate response.
The ICBM launch on Thursday by North Korea is thought to be its largest test ever, militaries in South Korea and Japan said.
It would be the first full-capability launch of the nuclear-armed state's largest missiles since 2017, and represents a major step in the North's development of weapons.
Japanese authorities said the launch by North Korea appeared to be a "new type" of ICBM that flew for about 71 minutes to an altitude of about 6,000km (3,728 miles) and a range of 1,100km (684 miles) from its launch site.
South Korean deputy national security advisor Suh Choo-suk condemned the launch as "a clear violation of U.N. Security Council resolutions, and a reversal of the moratorium on ICBM launches, which North Korea had promised to the international community".
According to South Korea's Joint Chiefs of Staff, the latest North Korean missile was launched from near Sunan, where Pyongyang's international airport is located.