North Korea introduced by means of state media on the morning of the nineteenth that it carried out a launch coaching of the ICBM = intercontinental ballistic missile class “Hwasong-15” on the 18th.
It is claimed that the coaching was carried out by the newly established “Missile Directorate”.
On the night of the 18th, North Korea launched an ICBM-class missile from the suburbs of the capital, Pyongyang, and after reaching a most altitude of about 5,700 km, it’s believed to have fallen into the Sea of ​​Japan inside Japan’s EEZ (Exclusive Economic Zone). So, the announcement appears to level to this missile.
Source