The National Aerospace Development Administration (NADA) of the DPRK launched a military reconnaissance satellite, "Malligyong-1", mounted on a new-type carrier rocket, "Chollima-1", at the Sohae Satellite Launching Ground in Cholsan County of North Phyongan Province at 6:27 on May 31, Juche 112 (2023), as scheduled.

The carrier rocket "Chollima-1" fell to the West Sea of Korea after losing thrust due to the abnormal starting of the second-stage engine after the separation of the first stage during the normal flight.

The NADA spokesperson attributed the failure to the low reliability and stability of the new-type engine system applied to carrier rocket "Chollima-1" and the unstable character of the fuel used, saying that scientists, technicians and experts concerned start discovering concrete causes.

The NADA said that it would thoroughly investigate the serious defects revealed in the satellite launch, take urgent scientific and technological measures to overcome them and conduct the second launch as soon as possible through various part tests.