"Finland’s concern regarding GPS signal disruption and the security risks it causes to i.a. civilian air traffic were conveyed to the Russian Ambassador at the Ministry for Foreign Affairs today. We expect from Russia responsible behavior and further information on the issue," the ministry said on Twitter Monday.
Helsinki launched an investigation after several pilots reported losing GPS signal during the two-week Trident Juncture military drills. Commenting on the issue, Finnish Prime Minister Juha Sipila claimed that the disruption could have been caused by Russia.
The NATO Trident Juncture drill, which involved about 50,000 troops from over 30 countries, including formally non-aligned Sweden and Finland, took place from October 25 to November 7.