North Korea has test-fired a ballistic missile which travelled 1,000km (620 miles) before landing in Japanese waters, the South and Japan say.
The missile was launched off the North’s east coast early on Wednesday, BBC reports.
The North is barred from developing nuclear and ballistic missile technology by UN resolution.
But it had vowed a “physical response” to the US and Seoul’s plan to deploy an advanced missile defence system in South Korea.
It has carried out repeated launches in recent months.
The US Strategic Command said two missiles had been fired simultaneously on Wednesday and that one exploded immediately after launch.