PYONGYANG -- Kim Jong-un, top leader of the Democratic People's Republic of Korea (DPRK), attended a ceremony of presenting large-caliber multiple rocket launchers in the capital ahead of an upcoming major party congress, the official Korean Central News Agency (KCNA) said Thursday.

The ceremony was held on Wednesday at the plaza of the April 25 House of Culture, where 50 600-mm-caliber multiple rocket launchers were presented by the country's munitions industry sector in dedication to the Ninth Congress of the Workers' Party of Korea (WPK).

Kim presided over the event and drove a launcher vehicle to review the weaponry lined up at the plaza, said the report.

"The 600 mm-caliber multiple rocket launchers are admirable military equipment making it possible to successfully carry out the strategic plan for rapidly developing the national war deterrence," Kim was quoted as saying in a speech.

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He added that the upcoming WPK congress will "make clear the next-stage plan and goal for strengthening the self-reliant defence capabilities," said the report. 

ROK's drone incident

Meanwhile, a senior official of DPRK expressed appreciation for the latest statement by an official from the Republic of Korea admitting drone incursions, and vowed to beef up security along the country's southern border, KCNA reported Thursday.

"I highly appreciate that Jong Tong-yong, minister of Unification of the ROK, officially acknowledged the ROK-born drone's provocative intrusion into the airspace of our country, expressing regret once again and willingness to prevent recurrence on February 18," Kim Yo-jong, vice-department director of the Central Committee of the Workers' Party of Korea, said in a press statement on Wednesday.

"Terrible consequences will be entailed if such a violation of the sovereignty of the DPRK reoccurs, no matter who the mastermind is and by what means it is carried out," she said.