North Korea launched an intercontinental ballistic missile (ICBM) shortly before the scheduled meeting between the leaders of South Korea and Japan
The launch of the long-range missile was confirmed by officials from both Japan and South Korea on Thursday morning.
The missile traveled approximately 1,000km (620 miles) and landed in waters west of Japan.
This marks the fourth missile launch by Pyongyang in a week, and it coincides with joint navy exercises between the US and South Korea
The other missiles launched – last Thursday, on Saturday and on Monday – had been short-range ballistic missiles.
North Korea’s ramped-up missile activity will most likely be top of the agenda when South Korean President Yoon Suk Yeol meets Japan’s Prime Minister Fumio Kishida in Tokyo later on Thursday – the first such visit in 12 years.
Since Monday, the US and South Korea have been carrying out drills around the Korean peninsula- the allies’ largest in five years. North Korea has repeatedly said it sees such exercises as provocation.
Thursday’s missile was fired at 07:10 (22:10 GMT) from Pyongyang on the east coast of North Korea, South Korea’s Joint Chiefs of Staff said.
Japan’s defence ministry confirmed it as an ICBM type and said it flew higher than 6,000km for about 70 minutes. It landed at about 08:20 outside of Japan’s exclusive economic zone, the ministry said.
Japan officials have not reported any damage from the missile.
Following Thursday’s launch, Mr Yoon ordered his country’s military to continue with the joint US exercises as planned.
Pyongyang would pay for its “reckless provocations”, he said.
North Korea last fired an ICBM less than a month ago – an action that sparked a UN emergency meeting and condemnation from G7 countries.
ICBMs are particularly worrying because of their long range. Experts have said that such missiles launched from North Korea could potentially reach mainland United States.
Pyongyang is also believed to have developed ICBMs that can carry multiple warheads.
The escalation in North Korean aggression over the past year is one of the central topics to be discussed at the Tokyo meeting on Thursday.
Many hope the meeting – which has been hailed as a “milestone” in the rapprochement of South Korea and Japan – will result in closer security ties and military cooperation between the two countries.
Both countries said they would convene their national security councils following Thursday’s missile launch.