The military exercise involved thousands of USA and North Atlantic Treaty Organisation troops, CNN reported, citing the Norwegian government. 'Also on later occasions. including during Trident Juncture, ' he said.
Trident Juncture 18 (from 25th Oct.to 7 Nov.) involved soldiers from 31 countries.
As said in the defense Ministry, the Norwegian foreign Ministry has already raised this issue in dialogue with the Russian authorities. "Finland has expressed concern over possible jamming in Lapland", NATO spokesperson Oana Lungescu told CNN Wednesday.
The GPS jamming incident was another sign of Russia's "aggressive" behaviour towards neighbouring countries, he said. The Resilient Navigation and Timing Foundation (RNTF) has written about multiple such events in its blog. It was billed as the alliance's most massive exercise since the Cold War.
"The obstacles from the Russian side was recorded in the period from 16 October to 7 November", the Ministry noted.
"What I can say is that we see that cyber, electronic warfare, electronic means are used more and more frequent in different operations, and therefore we take all these issues very seriously", Stoltenberg added.
The northern Arctic regions of Finland's Lapland and Norway's Finnmark are adjacent to the Kola Peninsula of Russia, where the Russian Northern Fleet with major naval and submarine bases and other Russian military installations is located. Although Norway is a founding member of NATO, Moscow has voiced strong opposition to the presence of NATO and United States troops in the country.
The Finnish region of Lapland and northern parts of Norway close to the Russian border were affected by the blackouts with the Norwegian regional airline Widerøe confirming its pilots had experienced Global Positioning System disruption.
Finnish President Sauli Niinisto has called for a thorough investigation into the incident.
Svein Johan Pedersen, department leader from the Civil Aviation, confirmed Monday to NTB that they had also noticed interference in Global Positioning System signals.
"There is a trend to blame all mortal sins on Russia", Dmitry Peskov said.
The Barents Observer has reported that Russian Federation has invested heavily in electronic warfare equipment in recent years and has been training its forces in how to disrupt or shut down GPS-, radio- and mobile phone signals.