North Korea has test-fired a ballistic missile, the South Korean military has told Yonhap news agency.
It was not immediately clear how far the missile had travelled but a US government source was quoted by Reuters as saying the test had been unsuccessful.
According to South Korea’s military chiefs of staff, the missile was fired from a site in South Pyeongan province north of Pyongyang in the early hours of Saturday morning local time.
They said the type of missile was not yet known.
There has been no word from North Korea.
The reported launch occurred a matter of hours after the US Secretary of State Rex Tillerson called on the rest of the world to help force North Korea to give up its nuclear ambitions.
Tensions in the region have increased lately, with both North and South Korea conducting military exercises.
Less than a week ago, a North Korean missile test failed. The US military reported that it exploded within seconds of being launched.