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Unidentified Drones Spark Security Alert at French Military Base

The incident prompted reinforced security and an ongoing investigation at a key tactical drone training center, with no evidence of foreign state involvement, officials said.

  • On the night of September 22, unidentified drones were spotted over the Mourmelon-le-Grand military base, which covers more than 10,000 hectares and hosts the Tactical Drone Training Center this year.
  • Officials said the small drones were `not military-operated`, and authorities described the incident as `exceptional`, stressing no evidence of foreign state involvement.
  • Regional reports show drone activity paralyzed Copenhagen Airport and triggered alarms at Akershus military fortress on September 22, while drone sightings suspended Aalborg Airport operations and NATO scrambled two Hungarian Gripen fighter jets on September 25.
  • An investigation is now underway, with Mourmelon-le-Grand base security forces reinforcing measures and filing a report with the local gendarmerie in line with drone protocols.
  • Across the week, several flights were diverted as drones were detected in multiple locations, including Denmark, where a second drone-related disruption occurred.
Insights by Ground AI

26 Articles

Center

The overflight of unknown drones over the military camp of Mourmelon-le-Grand worries the French authorities. The threat of drones is intensifying in Europe.

Lean Right

On the night of Sunday 21 to Monday 22 September, several drones were observed over the military base of Mourmelon-le-Grand, in the Marne. The reasons for these overflights remain unknown at this stage. An investigation was opened.

Lean Left

Drones have also been flying over Danish, Polish and Norwegian airspace in recent days.

·France
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Lean Right

Aeronave warned in Mourmelon-la-Grand was not "piloted by soldiers".In this French base Ukrainian soldiers received training in 2024. Today there is a training centre of army drones.

·Portugal
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  • 42% of the sources are Center
42% Center

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Sud Ouest broke the news in France on Thursday, September 25, 2025.
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