North Korea fired an unknown projectile into the East Sea on the 5th, the Joint Chiefs of Staff said.
The Joint Chiefs of Staff disclosed this through a text message sent to the reporters today, but did not mention specifics.
This launch is North Korea's first armed protest in the New Year.
Based on the test launch of a new submarine-launched ballistic missile (SLBM) from a submarine on October 19 last year, it has been 78 days.
Normally, when military authorities detect ballistic missiles, they promptly notify the media.