The launch came days after North Korea test-fired a suspected ICBM in the Sea of Japan.
North Korea fired a ballistic missile into the sea off the east coast of the Korean Peninsula, Yonhap news agency reported, citing South Korea’s Joint Chiefs of Staff (JCS).
JSC did not immediately provide details on Sunday’s launch.
The Japan Coast Guard also said that what was fired by North Korea may have been a ballistic missile.
The launch was after North Korea fired a suspected intercontinental ballistic missile (ICBM) in the sea between the Korean peninsula and Japan on Thursday, hours before the South Korean president flew to Tokyo for a summit who discussed ways to counter their nuclear-armed neighbors.
North Korean state media described the launch of the Hwasong 17 as a response to continuous, “furious” joint drills of South Korea and the United States.
Seoul and Washington have boosted security cooperation after a year of record-breaking North Korean weapons tests and nuclear threats.
Pyongyang views all such exercises as rehearsals for invasion.
Last year, North Korea declared itself an “irreversible” nuclear power, and leader Kim Jong Un recently called for an “exponential” increase in weapons production, including tactical ones. nuclear weapon.