S.Korea, US launch missiles in response to N.Korea tests

South Korea and the United States fired eight surface-to-surface missiles off South Korea's east coast, early Monday, after North Korea launched a barrage of short-range ballistic missiles on Sunday, a South Korea defence ministry official said.

The action is a demonstration of "the capability and readiness to carry out a precision strike" against the source of North Korea's missile launches or the command and support centres, South Korea's Yonhap news agency cited the South Korean military as saying.

South Korean President Yoon Suk-yeol, who took office last month, has vowed to take a tougher line against the North and agreed with U.S. President Joe Biden at a May summit in Seoul to upgrade joint military drills and their combined deterrence posture.

The militaries of South Korea and the United States fired eight surface-to-surface missiles over about 10 minutes starting at 4:45am on Monday (1945 GMT Sunday) in response to the eight missiles fired by the North on Sunday, Yonhap reported.

An official from South Korea's Defence Ministry confirmed eight Army Tactical Missile Systems (ATACMS) had been fired.

North Korea's short-range ballistic missiles, fired toward the sea off its east coast on Sunday, were probably its largest single test and came a day after South Korea and the United States ended joint military drills.

The South Korea-U.S. bilateral exercises involved an American aircraft carrier for the first time in more than four years.

Japan and the United States also conducted a joint military exercise on Sunday in response to the latest North Korea missile tests.

North Korea has conducted a flurry of missile launches this year, from hypersonic weapons to tests of its largest intercontinental ballistic missiles (ICBMs) for the first time in nearly five years.

Yonhap, citing an unidentified source, said the North's volley on Sunday was launched from four locations, including Sunan in the capital, Pyongyang.

North Korea continued with its recent trend of not reporting on missile launches in state media, which some analysts have said is meant to show that they are doing it as part of routine military drills.