South Korea's Joint Chiefs of Staff detected several missiles launched from North Korea's eastern coastal area of Wonsan around 5:20 am on Saturday (local time), which flew about 250 kilometers (155 miles). South Korea is closely exchanging information on the launches with the United States and Japan. The launches occurred a day after South Korea concluded joint maritime drills with the US and Japan, which North Korea's defense minister had previously criticized, warning of "strong and reflective countermeasures."