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Finland says GNSS jamming, wind caused Ukrainian drones to enter its airspace in spring

By Thomson Reuters Sep 9, 2026 | 5:19 AM

HELSINKI, Sept 9 (Reuters) – Four Ukrainian military drones found in Finland in March and April were diverted from their ​intended route by satellite ‌navigation interference in combination with wind, Finnish police and border guards said on Wednesday.

Finland and nearby Estonia, Latvia and Lithuania have ‌seen ​a string of recent ⁠incidents where Ukrainian drones ⁠aimed at Russia have strayed into their airspace.

• “The investigation established that the UAVs (Unmanned Aerial Vehicles) originated in Ukraine ​and formed part of Ukraine’s countermeasures in response to Russia’s war ⁠of aggression,” the ⁠Finnish Border Guard said in ​a statement.

• “The UAVs had not, however, ​been targeted at Finland; instead, they ‌were thrown off course by strong GNSS (Global Navigation Satellite System) jamming detected in the eastern Gulf of Finland ⁠at the time, combined with the prevailing weather conditions,” it added.

• The agencies said ⁠the prosecutor ‌had closed the investigations ⁠into the incidents, having found ​no ‌grounds to pursue criminal liability.

• ​The ⁠agencies said all four drones had carried explosives. No injuries or property damage were reported in connection with the crashes.

(Reporting by Essi Lehto, editing by ​Anna Ringstrom)