Liege airport in Belgium has temporarily halted flights for the second time in a week due to the sighting of a drone, according to the country's air traffic control service.
The disruption comes just three days after drones were spotted in Brussels, forcing the diversion of several incoming aircraft and the grounding of some that were about to take off.
The appearance of drones over airports and military bases has caused significant disruption across Europe in recent months. Authorities in some countries have linked the incidents to Russia, saying they are part of Moscow's "hybrid warfare" campaign against Europe.
Source: protothema.gr
