Seoul, Ramadan 04, 1438, May 30, 2017, SPA -- Two US B-1B bombers flew off the coast of North Korea hours after it conducted its latest test of a short-range ballistic missile this week, dpa reported. The South Korean Ministry of Defence confirmed the participation of B-1B bombers in joint drills on Monday. South Korean radio station KBS reported two US planes were involved, citing military sources. A ballistic missile launched early Monday by the North flew 450 kilometres from the eastern coastal city of Wonsan and landed in the Sea of Japan, according to South Korean and US authorities. Pyongyang called the missile test - its ninth so far this year - a success. --SPA 14:49 LOCAL TIME 11:49 GMT www.spa.gov.sa/w417540