North Korea launched four ballistic missiles from its long-range rocket launch site on Monday morning, the South Korean military said. The launch prompted an urgent meeting of high-level South Korean security officials to discuss the latest provocation from the North.

The missiles took off from Tongchang-ri, in northwest North Korea, and some flew 620 miles before falling into the sea between North Korea and Japan, the military said, providing no further details. Tongchang-ri is where the North’s main long-range rocket launch site is based. The country launched a rocket from there to put a satellite into orbit in February 2016. READ MORE