REUTERS

SEOUL 鈥 A North Korean(NK) drone entered the northern end of a no-fly zone surrounding South Korea鈥檚 presidential office in Seoul when it intruded into the South鈥檚 airspace last week, the South鈥檚 military said on Thursday.

The drone was among five North Korean drones that crossed into the South on Dec. 26, prompting South Korea鈥檚 military to scramble fighter jets and attack helicopters. The military was unable to bring down the drones, which flew over the South for hours.

South Korea鈥檚 Joint Chiefs of Staff (JCS) had denied that one of the drones intruded into a no-fly zone near the presidential office, but on Thursday reversed its stance and confirmed it had violated the northern end of the area.

A JCS spokesperson said there was a change in its analysis after an inspection of the military鈥檚 readiness posture over the latest intrusion.

The military said the North鈥檚 unmanned aircraft did not fly directly over the Yongsan area, where the office of President Yoon Suk-yeol is located.

The border crossing has sparked criticism over South Korea鈥檚 air defenses at a time of the North鈥檚 growing nuclear and missile threats.

Mr. Yoon has warned he would consider suspending a 2018 inter-Korean military pact if the North violates its airspace again. 鈥 Reuters