Balloons used to smuggle cigarettes shut Lithuanian airport
At least 11 of the weather balloons, carrying 18,000 packs of black-market cigarettes, have since been recovered
The "airspace violations" come at a time of heightened tension in Europe after a number of drone incursions, suspected of being linked to Russia, caused air traffic disruption.
The airport said the shutdown led to 30 flight cancellations affecting 6,000 passengers.
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