Lyce · Hybrid Watch

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Drone spotted flying over the Forsmark Nuclear Plant.

Swedish police deployed patrols and helicopters to the Forsmark nuclear-plant site after a large drone was seen flying over the installation late on Friday night and then disappearing toward the island of Gräsö. The incident occurred amid heightened tensions in the Baltic Sea region, just a day after Sweden’s military started patrols over the island of Gotland. A nuclear facility located on the coast in waters adjacent to potential access routes from Russia via the Baltic Sea, making air incursions over such infrastructure a significant national-security concern. Authorities said there were no signs the drone dropped anything or landed, the unauthorized aerial presence over a critical facility fits the hybrid-warfare pattern of reconnaissance or probing rather than a direct kinetic strike. The dynamic of the event illustrates how adversaries might exploit unmanned aerial systems to test perimeter defences, response times, and monitoring protocols around high-value infrastructure. Sweden’s Security Service (Säpo) took over the investigation, pointing to the seriousness of the incident.

Occurrence
2022-01-15
Publication
2022-01-14T23:00:00Z
First observed
2026-09-24T06:09:10.079Z
Review status
Not assessed
Countries
SE
Updated
2026-09-27T23:56:59.668Z

E/M/R/S scores

  • EExistence0/4 · Not assessed
  • MIntent0/4 · Not assessed
  • RRussian actor link0/4 · Not assessed
  • SRussian state responsibility0/4 · Not assessed

Facts

No facts

Sources

  1. Role
    discovery_lead
    Date
    2022-01-14T23:00:00Z

    Swedish police deployed patrols and helicopters to the Forsmark nuclear-plant site after a large drone was seen flying over the installation late on Friday night and then disappearing toward the island of Gräsö. The incident occurred amid heightened tensions in the Baltic Sea region, just a day after Sweden’s military started patrols over the island of Gotland. A nuclear facility located on the coast in waters adjacent to potential access routes from Russia via the Baltic Sea, making air incursions over such infrastructure a significant national-security concern. Authorities said there were no signs the drone dropped anything or landed, the unauthorized aerial presence over a critical facility fits the hybrid-warfare pattern of reconnaissance or probing rather than a direct kinetic strike. The dynamic of the event illustrates how adversaries might exploit unmanned aerial systems to test perimeter defences, response times, and monitoring protocols around high-value infrastructure. Sweden’s Security Service (Säpo) took over the investigation, pointing to the seriousness of the incident.