North Korean leader Kim Jong Un (Picture: KCNA).
North Korea has fired two missiles into the sea, South Korea's Joint Chiefs of Staff said.
The two short-range missiles were fired from Wonsan, on the country's eastern coast, into the sea in the early hours of Thursday.
The first missile was launched at 05:34 local time (23:34 GMT Wednesday) and the second at 05:57 (23:57 GMT).
At least one of the missiles appeared to be a new design, according to South Korean officials.
The allegedly newly-designed missile travelled almost 700 km.
It is the first time North Korea has fired any missiles since the last meeting held between the North Korean leader Kim Jong Un and US President Donald Trump in June.
The upcoming annual planned military exercises between the United States and South Korea could have been behind North Korea's decision to fire the missiles.
The South Korean Defence Ministry has urged Mr Kim to stop acts deemed unhelpful in easing tensions between the two countries, according to Reuters.