Meteorological devices containing thousands of packs of cigarettes have disrupted flights in Lithuania, as Vilnius Airport was forced to close for an extended period when multiple of them floated into the country's airspace.
The operational halt led to the cancellation of 30 flights affecting 6,000 passengers, with authorities cautioning that further disruptions were possible throughout Monday.
Border security stated that twenty-five weather balloons were spotted infiltrating Lithuania from the border with Belarus, with two of which ending up precisely above the aviation facility.
Up to 14 of the atmospheric instruments launched over the weekend floated over the metropolitan zone, which is situated near Lithuania's main urban center and close to the frontier with Belarus.
At least 11 balloons carrying 18,000 packs of contraband smoking materials have since been recovered, though more recoveries are anticipated, according to customs agents.
Although causing problems, authorities noted that "Balloons with contraband - Belarusian smoking products - are not unusual in Lithuania, Latvia, and Poland."
So far this year, 544 balloons have been documented crossing into Lithuania from Belarus, while nearly a thousand were recorded last year.
Simultaneously, the north-eastern Podlaskie region, which likewise adjoins Belarus, has recorded more than one hundred incidents in which illegal goods were transported from its adjacent country employing the balloons.
In response to questions about why criminals use a technique that proves especially affected by weather conditions rather than easier to manage drones, officials clarified that "Atmospheric equipment are rudimentary tools used by smugglers - they are more economical than drones for moving tobacco products from Belarus."
Officials added that "The objective of our agencies is to seize the largest possible quantities of contraband and to detain organisers and participants so that this activity become economically unsustainable and create minimal risk to civil aviation."
These airspace violations occur during a time of growing anxiety in Europe following numerous drone incursions that have caused air traffic disruption across European nations.
Parallel situations in neighboring countries have led European authorities to speed up talks about improving airspace protection throughout the continent.
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