North Korea fires ballistic missile towards sea, says South Korea

FILE PHOTO: A North Korean flag flutters on top of a 160-metre tower in North Korea's propaganda village of Gijungdong, in this picture taken from the Tae Sung freedom village near the Military Demarcation Line (MDL), inside the demilitarised zone separating the two Koreas, in Paju, South Korea, April 24, 2018. REUTERS/Kim Hong-Ji/File Photo

SEOUL (Reuters) -North Korea fired at least one ballistic missile towards the sea off its east coast, the South Korean military said on Sunday, a day after a top U.S. envoy departed Seoul.

Seoul's Joint Chiefs of Staff said North Korea had fired an "unknown" missile, without elaborating.