Russia is very likely behind a series of jams affecting GPS navigation in the Baltic region, the German defense ministry said, pointing to the Kaliningrad exclave as the source of the problem, reports Reuters.
"Persistent disruptions to the global navigation satellite system are very likely of Russian origin and are based on disturbances in the electromagnetic spectrum, including those originating in the Kaliningrad region," a ministry spokesman told Reuters, confirming a story on the news website t- online.
The spokesman declined to elaborate on how Berlin made its assessment or the exact nature of the disruption, citing "military security reasons".
Kaliningrad is a Russian territory wedged between Lithuania and Poland on the Baltic Sea coast.
The Russian Embassy in Berlin declined to comment on the subject.
Last month, a government source told Reuters that Russia is believed to have jammed the satellite signal of a plane used by British Defense Secretary Grant Shapps when it flew near Kaliningrad.
The aviation industry has expressed concern about the rise in GPS interference related to the conflicts in Ukraine and the Middle East.
Jamming GPS signals can be disruptive to civilian aircraft, but they can usually navigate by other means.