"We have not detected any objects flying toward Japan. There have been no events posing an immediate threat to the security of Japan," Suga said at a press conference, adding that Tokyo had expressed "a decisive protest to North Korea through diplomatic channels in Beijing."
North Korea has been widely criticized by the international community for its tests of nuclear warheads and missile launches.
The current report by the US Strategic Command comes about a week after its previous announcement regarding another failed test by North Korea of an intermediate-range ballistic missile.
In September, Pyongyang exploded a nuclear warhead, which became the largest blast North Korea had had since it started to develop nuclear and missile programs.
In January, it detonated a hydrogen bomb.
