Unidentified drones were spotted over a Belgium military base housing U.S. nuclear weapons, sparking security concerns and an investigation into a potential spying operation.

Mobile phones detected at sensitive sites, including nuclear plants, NATO headquarters, military bases, finds investigation by European media outlets - Anadolu Ajansı

Belgium's defense minister said that more counter-uncrewed aerial systems "are urgently needed" after three drones spied on the Kleine-Brogel base.

Both NATO and the European Union have been on high alert following a string of airspace violations, thought to be from Russia, in recent weeks.View on euronews

Several drones spotted above a Belgian airbase over the weekend were there “to spy” on military fighter jets, the country’s defense minister said Sunday, at a time when European nations are on high alert for airspace intrusions.

The airbase in Peer, Belgium, houses B61 nuclear bombs and F-16 fighter jets as part of NATO’s nuclear defense network. Authorities immediately launched an emergency response. A helicopter and several police vehicles chased the objects across several ...

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