N Korea drone entered presidential office no-fly zone: Military

A North Korean drone entered the northern end of a 3.7km (2.2 miles) radius no-fly zone surrounding South Korea’s presidential office in Seoul when it intruded into the country’s airspace last month, military officials have said.

The drone was among five North Korean unmanned aerial vehicles that crossed the border and entered South Korean airspace on December 26, prompting South Korea’s military to scramble fighter jets and attack helicopters. The military could not bring down the drones, which flew over South Korean territory for hours.