North Korea has fired another ballistic missile, South says

Launch was the sixth in 12 days and the first since an intermediate-range missile was fired over Japan on Tuesday

North Korea has fired an unspecified ballistic missile toward its east coast, South Korea's joint chiefs of staff said on Thursday morning, following joint South Korean and US missile drills and the return of a US aircraft carrier to the region in response to the North's recent missile tests.

Japan's coast guard said North Korea may also have fired a second missile.