The missiles were launched at around 8 a.m. on Sunday and are being analyzed by South Korean and U.S. intelligence agencies, the JCS said, without specifying how many were fired or how far they flew.

“While strengthening surveillance and vigilance, our military is closely cooperating with the US to monitor for additional signs and activities from North Korea,” the South Korean military said in a statement.

The latest launch comes days after North Korea launched a new strategic cruise missile called "Pulhwasal-3-31" that is capable of carrying nuclear weapons.

Earlier on Sunday, North Korean state media KCNA denounced a series of military drills conducted in recent weeks by the US and South Korean militaries, warning of "merciless" consequences.

North Korea conducted its first test of a nuclear-capable cruise missile in September 2021.

South Korean Defense Minister Shin Won-sik condemned the recent launches as a grave threat to South Korea and beyond.

Mai Anh (according to Reuters)