North Korea has fired two more missiles into the sea in Kim Jong-un’s fourth launch within two weeks.
The weapons were launched into the Sea of Japan as the country lashed out at joint US-South Korea military exercises.
It comes after the rogue state carried out three missile launches in just over a week, the first being on July 25.
South Korea’s military alerted reporters to the latest launches on Monday.
The North's Foreign Ministry denounced Washington and Seoul over the start of their joint exercises.
Its statement released by a spokesman said the drills leave the North "compelled to develop, test and deploy the powerful physical means essential for national defence".
The North's spokesman said Pyongyang remains committed to dialogue, but it could seek a "new road" if the allies do not change their positions.
Seoul's Joint Chiefs of Staff said the projectiles were launched from an area near the North's western coast and flew cross-country before landing in waters off the eastern coast.
It did not immediately say how many projectiles were fired or how far they flew.
The North last week conducted two test-firings of what it described as a new rocket artillery system and conducted a short-range ballistic missile launch on July 25.
It described the tests as a "solemn warning" to South Korea over its plans to continue military drills with the US.
Experts say the North's weapons display could intensify in coming months if progress is not made on the nuclear talks.
Agencies contributed to this report
