BRUSSELS - Belgium's Liege airport temporarily halted flights due to drone sighting, the second such incident this week, national news agency Belga said on Friday citing the skeyes air traffic control service.
Drones spotted flying over airports in the capital Brussels and in Liege, in the country's east, forced on Tuesday the diversion of many incoming planes and the grounding of some due to depart.
Sightings of drones over airports and military bases have become a constant in Belgium in recent days, and have caused major disruptions across Europe in recent months.
They have forced temporary closures of airports in several countries including
Sweden
on Thursday. Some officials have blamed the incidents on "hybrid warfare" by Russia. Moscow has denied any connection with the incidents.
The Belgian government called an emergency meeting of key government ministers and security chiefs on Thursday to address what the defence minister called a coordinated attack.