North Korea has launched a ballistic missile toward its eastern waters and flew warplanes near the border with South Korea, the South’s military said, further raising animosities triggered by the North’s recent barrage of weapons tests. South Korea’s joint chiefs of staff said the launch happened early on Friday local time but gave no further details including how far the weapon flew. The Japanese defence ministry and prime minister’s office also tweeted that North Korea launched a possible missile. Itis the latest in a spate of missile launches by North Korea in recent weeks. Pyongyang said on Thursday that Kim Jong-un supervised the test launches of long-range cruise missiles that the country’s leader said successfully demonstrated his military’s expanding nuclear strike capabilities. North Korea said earlier this week that its missile tests in the past two weeks were simulated nuclear attacks on key South Korean and US targets. It said the weapons tests were meant as a warning to Seoul and Washington for staging “dangerous” joint naval exercises involving a US aircraft carrier. The North Korean launches, part of its record-breaking run of weapons tests this year, were seen as an attempt by Kim to acquire a more intimidating arsenal to pressure its rivals to accept his country as a legitimate nuclear state and lift economic sanctions. South Korea’s joint chiefs of staff also said in a statement that North Korea had flown warplanes near the countries’ border late on Thursday and early on Friday, prompting the South to scramble fighter jets. The North Korean planes flew as close as seven miles (7km) north of the inter-Korean border. The joint chiefs of staff said the South responded by scrambling F-35 jets and other warplanes. There were no reports of clashes.