"The continuing provocations are absolutely unacceptable," Kishida said, as quoted by Kyodo news agency.
The foreign minister reportedly added that Tokyo would cooperate with Washington and Seoul as well as other interested countries to counter the threat from North Korea.
Chief Cabinet Secretary Yoshihide Suga also reportedly stressed that Tokyo was very aware of North Korea's rocket-related activities and was analyzing new information.
On Sunday, North Korean media reported that a new high-thrust rocket engine was successfully tested on the ground.
Pyongyang has carried out a number of missile launches and nuclear tests in the last year, with the latest being the launch of four missiles in the direction of the Sea of Japan, conducted on March 6, prompting escalation of tensions on the peninsula.
