North Korea fired a suspected ballistic missile on Saturday, Japan's Defense Ministry said.
The projectile appears to have already fallen, Japan's Kyodo News reported, citing the ministry.
South Korea's Joint Chiefs of Staff said it had detected the launch of at least one unidentified projectile toward the East Sea but provided no further details, according to Yonhap News Agency.
North Korea last fired multiple short-range ballistic missiles toward the East Sea on Jan. 27.
The latest launch comes as South Korea and the US conduct their annual springtime Freedom Shield military exercise.
