Poland introduced restrictions to air traffic along its eastern borders with Belarus and Ukraine, the Armed Forces’ Operational Command said on Thursday, amid increased tensions a day after multiple drone incursions into the NATO member’s airspace.

Axar.az informs, citing Reuters, “At the request of the Operational Command of the Branches of the Armed Forces ... air traffic restrictions will be introduced in the eastern part of Poland in the form of the restricted zone EP R129,” Polish Air Navigation Agency said in a statement published late on Wednesday.

The restrictions came into force at 2200 GMT on Wednesday and apply until December 9, it said.

From sunrise to sunset flights in the restricted zone are banned, apart from manned aircraft operating in accordance with a flight plan with appropriate transponders and maintaining two-way communication with air authorities, the agency said.

The restrictions also make exception for military flights and some additional special-purpose flights and call signs.

“From sunset to sunrise there is a total ban on flights, with the exception of military aircraft... In the EP R129 zone, there is a 24-hour flight ban on civilian unmanned aircraft,” the agency said.