North Korean leader Kim Jong Un attends the 8th enlarged Plenary Meeting of the 8th Central Committee of the Workers' Party of Korea, in Pyongyang, North Korea, in this undated photo released by North Korea's Korean Central News Agency (KCNA) on June 19, 2023. (Photo: KCNA via REUTERS)

The enlarged plenary meeting was held between Friday and Sunday, ordering workers and researchers to analyze the failed military satellite launch and prepare for another in the near future. 

Those in charge of the satellite launch were "heavily criticized," the report said. 

The North Korean rocket plunged into the sea "after losing thrust due to the abnormal starting of the second-stage engine," Pyongyang said after the launch failure in an unusually candid admission of a technical problem.

North Korea also vowed it will continue to develop its nuclear capability and strengthen solidarity with other countries that oppose what it called the "US strategy for world supremacy."