North Korean leader Kim Jong-un, third from right, holds a meeting with North Korean officials in North Korea, in this photo carried by North Korea's official Korean Central News Agency, Oct. 15. Yonhap

North Korean leader Kim Jong-un has held a meeting with top security officials to discuss what Pyongyang claims was South Korea's infiltration of drones and military action plans to respond to it, state media reported Tuesday.

At the meeting held Monday, Kim received reports about North Korea's plan to deal with the "enemy's serious provocation," including the military's counteraction plan and the situation related to the North's intelligence operations, according to the Korean Central News Agency (KCNA).

The North held a security meeting of such a format for the first time, according to South Korea's unification ministry.

North Korea claimed Friday that South Korean drones carrying anti-North Korea propaganda leaflets were detected in the night skies over Pyongyang three times this month, and threatened to respond with force if such flights occur again. North Korea's military said Sunday it has ordered front-line artillery units to be fully ready to open fire.

At the meeting, Kim put in place a plan to carry out an "immediate military action" and suggested "important tasks to be fulfilled in the operation of the war deterrent and the exercise of the right to self-defense for safeguarding the national sovereignty," the KCNA said, without disclosing details.

The report said Kim also "expressed a tough political and military stand" at the meeting.

The meeting brought together North Korea's key military and intelligence officials, including Ri Yong-gil, chief of the General Staff of the Korean People's Army (KPA), and Ri Chang-ho, director of the General Reconnaissance.

Commanding officers from the KPA's detection and electronic warfare bureau also attended the meeting.

"North Korea appears to have used the meeting to raise military tensions and security alertness while tightening social discipline and bolstering its internal solidarity," Yang Moo-jin, president of the University of North Korean Studies, said.

Tensions are running high on the Korean Peninsula, as North Korea warned of a "horrible disaster" if South Korea sends more drones over the North's capital.

Kim Yo Jong, the powerful sister of North Korean leader Kim Jong Un, attends a wreath-laying ceremony at Ho Chi Minh Mausoleum in Hanoi, Vietnam, March 2, 2019. AP-Yonhap

Kim Yo-jong, the powerful sister of the North's leader, issued a series of sharp-tongued statements accusing South Korea of flying drones into Pyongyang. She claimed Monday that the South Korean military was behind the alleged drone infiltration, without providing evidence.

In response to North Korea's military threat, South Korea's defense ministry has warned that the North will face "the end of its regime" if it causes any harm to South Korean people. The Joint Chiefs of Staff has said it could not confirm whether the North's drone claims were true.

In a rare move, North Korea carried reports about South Korea's alleged drone incursions in its state media targeting domestic audience, despite the sensitivity of the issue.

Since May, North Korea has sent thousands of trash-carrying balloons across the border with South Korea in retaliation against anti-Pyongyang leaflets launched by activists and North Korean defectors in the South. (Yonhap)