North Korea fires another missile, Japan and South Korea's militaries report

North Korea has fired another ballistic missile, according to reports from the South Korean and Japanese militaries.

The missile may have landed in Japan's EEZ, Japan's NHK public television said, quoting the defence ministry.

The new launch comes days after US President Donald Trump declared US patience with the regime was "over."

"The era of strategic patience with the North Korean regime has failed," Trump said in a statement on Friday from the White House Rose Garden South Korean President Moon Jae-in standing along side him.

"And, frankly, that patience is over." South Korean state news agency Yonhap said the unidentified ballistic missile was launched from a location near the North's border with China at 9:40 a.m. local time.

• North Korean missile 'blows up almost immediately' during launch

• North Korea fires another missile, Japan and South Korea's militaries report

The missile firing is the latest in a string of test launches from the rogue nation in recent months.

The most notable launch came on May 13 when the rogue state test-fired a newly developed mid-to-long range ballistic missile. After reaching an altitude of 2,111 kilometres, it was suggested the missile was capable of reaching US soil.

The Trump administration has for months urged China to rein in Pyongyang but recently the US president declared that Beijing efforts had failed.

During a phone call on Sunday, Trump "raised the growing threat posed by North Korea's nuclear and ballistic missile programs", the White House said.