UPDATED | September 14, 2017, 5:55PM
gettyimages 842003638 e1504476526324 North Korea Fires Missile Over Japan, South Korea Says

North Korea has developed a hydrogen bomb which can be loaded into the country’s new intercontinental ballistic missile, the official Korean Central News Agency claimed on September 3. (AFP PHOTO/KCNA VIA KNS STR/AFP/Getty Images)

SEOUL, South Korea (CBSNEWS/AP) – North Korea has fired an unidentified missile from its capital, Pyongyang, South Korea says, in a move that the South Korea’s foreign ministry strongly condemned.

Its the longest-ever flight of its kind. South Korea’s Joint Chiefs of Staff said the missile traveled about 2,300 miles and reached a maximum height of 478 miles.

South Korea’s military said it fired two ballistic missiles in response, South Korean news agency Yonhap reported. One missile “accurately hit” a simulated target in Japan’s East Sea about 155 miles away, the Joint Chiefs of Staff told reporters in a background briefing, Yonhap reported.

A defense ministry official said the South’s response came while the North’s missile was still flying, according to Yonhap.

According to Chief Cabinet Secretary Yoshihide Suga, the missile was launched at 6:57 a.m. Japan time Friday, flew over Hokkaido and splashed down at 7:06 a.m., about 2,000 kilometers east of Cape Erimo, according to the Reuters news agency.