Overview
- At least five small devices were detected over the Île Longue base around 19:30 local time on December 4, triggering a security response.
- Authorities describe electronic jamming as the response, after initial reports of gunfire were denied by the Rennes military prosecutor.
- No drones were brought down and no debris or operators have been found, and a maritime prefecture spokesman said the base was not threatened.
- A military judicial investigation led by prosecutors in Rennes is underway to verify the sightings, confirm the number and type of devices, and assess their origin.
- Officials have not assigned responsibility, noting the incident fits a wider pattern of unexplained drone activity over sensitive sites across Europe.