All three ended up outside Japan’s exclusive economic zone, according to public broadcaster NHK.
The launch came two days after North Korea fired an intercontinental ballistic missile (ICBM) into the sea off Japan’s west coast in what it called a “sudden launch drill.”
The North Korean leader’s sister, Kim Yo Jong, warned against increasing the presence of US strategic assets on the Korean peninsula, after Washington held bilateral joint air exercises with South Korea and Japan on Sunday.
“We are carefully examining the influence it would have on the security of our state,” he said in the statement. “The frequency of using the Pacific as our firing range depends on the character of the action of the US forces.”
Kim Yo Jong added that North Korea has “satisfactory” missile technology and capability, and “it will now focus on increasing its strength.”
Monday’s missile launch is the North’s third major weapons test this year, after Pyongyang threatened an “unprecedentedly persistent and forceful” response as South Korea and the United States prepared for their annual military exercises.