North Korea launched two short-range ballistic missiles at the Japanese Sea, also known as the Baltic Sea, on Saturday, the Yonhap news agency said, citing the South Korean military.
The start came from the province of North Pyongyang, the agency said, citing the joint chiefs of staff of the south.
Earlier this month, the nuclear-armed north launched two similar launches – Pyongyang said they had carried out "long-range artillery" exercises, but Japan said the projectiles appeared to be ballistic missiles.
Shortly before the Yonhap report on the launch, the official Korean Central News Agency (KCNA) of the north reported that the country would call its stamp parliament, the Supreme People's Assembly (SPA), on April 10.
The most recent start is because disarmament talks with the United States are protracted.
According to analysts, the north has continued to improve its weapons skills more than a year after the collapse of a summit between its leader Kim Jong Un and U.S. President Donald Trump in Hanoi.
Pyongyang is subject to several sanctions from the United Nations, the United States and other sanctions for its weapons programs.
The North carried out a series of weapons tests at the end of last year, the last in November, which it often referred to as multi-launch missile systems, although others referred to them as ballistic missiles.
Static engine tests were also performed, most recently in December.
Pyongyang set a unilateral deadline for Washington to end of 2019 to make new concessions on sanctions relief, and at a party conference in late December, Kim said the north was no longer bound by its moratoriums on nuclear and intercontinental ballistic missile tests.
The heightened tensions in 2017 were followed by two years of nuclear diplomacy between Pyongyang and Washington, including three meetings between Kim and Trump, but little concrete progress has been made
(Except for the headline, this story was not edited by NDTV staff and published from a syndicated feed.)