Lithuania on Tuesday declared a nationwide state of emergency over a surge in contraband-carrying balloons flying over the border from Belarus.

“It’s clear that this emergency is being declared not only because of disruptions to civil aviation, but also due to national security concerns and the need for closer coordination among institutions,” Lithuanian Interior Minister Vladislav Kondratovič said during a government meeting Tuesday.

Kondratovič added that the government had asked the parliament to grant the military additional powers to work with the law enforcement authorities during the state of the emergency.

“By introducing a state of emergency today, we are legitimizing the participation of the military … and indeed, every evening, a number of crews go out together with the police, conduct patrols, monitor the territory, and detect cargo,” he said.

Lithuania has accused its neighbor Belarus of repeatedly smuggling contraband cigarettes into the country using balloons, prompting air traffic disruptions and a border closure with Belarus. Belarusian dictator Alexander Lukashenko has called Vilnius’ response “petty.”

According to Lithuanian Interior Ministry data, at least 600 balloons and 200 drones entered Lithuania’s airspace this year, disrupting more than 300 flights, affecting 47,000 passengers and leading to around 60 hours of airport closures.

Lithuanian Prime Minister Inga Ruginienė said the state emergency will help coordination between joint response teams to better intercept the balloons, which both Lithuania and the EU consider to be hybrid attacks.

Lithuanian Foreign Minister Kęstutis Budrys told POLITICO in an interview in October that the EU must prepare new sanctions against Belarus to deprive it of the ability to wage hybrid war.