North Korea conducted two short-range ballistic missile tests on Saturday, according to the South Korean Yonhap news agency, citing the South Korean military. The missiles were launched from the area surrounding Munchon, which is located on the shore of the Sea of Japan.

The launches were detected by South Korea's military between 1:48 am and 1:58 am (1648 and 1658 GMT), according to the news agency.

Yonhap reported earlier in the day, citing military sources, that Pyongyang fired an unidentified ballistic missile into the Sea of Japan.

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North Korea has been firing ballistic missiles since late September in reaction to the United States and South Korea's unwillingness to suspend military drills near its territory, which Pyongyang regards as a dress rehearsal for war.

North Korea fires ballistic missile: Japan coast guard

North Korea appeared to have launched a ballistic missile, according to Japanese officials early Sunday, with national network NHK claiming that two missiles were launched.

The projectile had already fallen, according to a statement from Japan's coast guard. According to NHK, it appears to have landed outside of Japan's exclusive economic zone.

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NHK later added, citing Defense Ministry sources, that a second missile appeared to have been fired, though no other information was immediately available.

The Japanese Defense Ministry reported that the North Korean missile flew at an altitude of 100 km and covered a range of 350 km. It added that the type of missiles is being investigated along with the possibility that they were submarine-launched ballistic missiles.