N. Korean drone penetrates no-fly zone around S. Korea's presidential office

A North Korean drone briefly entered a 3.7-kilometer-radius no-fly zone around the office of President Yoon Suk Yeol in Seoul last month, Report informs referring to Yonhap.

The drone was among the five unmanned aerial vehicles that the North sent across the Military Demarcation Line separating the two Koreas on December 26. The South Korean military failed to shoot them down, raising questions over its air defense posture.

"It briefly flew into the northern edge of the zone, but it did not come close to key security facilities," the official told Yonhap News Agency on condition of anonymity, referring to the security area called "P-73."

In a background briefing for reporters later in the day, another military official also said an object, presumed to be an enemy drone, appears to have flown through a part of the "northern tip" of the P-73 zone.

"But I would like to clarify that there was no problem regarding the security of the presidential office in Yongsan," the official stressed.

Defense Minister Lee Jong-sup reported the drone's entry into a part of the zone to Yoon during Wednesday's briefing on counter-drone measures, such as plans to secure radar-evading drones and "drone-killer" systems.