'We're monitoring the situation along with other involved agencies. It is well known that the Foreign Ministry previously brought up this issue in contacts with the Russian government,' the message said.
The aviation security chief also confirmed that the signal jamming action took place. According to him, the violations in the airspace were observed on several occasion, when GPS signals were too weak or absent at all during the flights', the message said.
Earlier, Finland also blamed Russia for damping the GPS signal during Trident Juncture.
Previously, Jens Stoltenberg, the Alliance's Secretary-General said NATO allies in Europe are not going to place any new nuclear arms - even in the view of the latest decision of the U.S. government to withdraw from the 1987 Intermediate-Range Nuclear Forces Treaty.
'The NATO chief also said that the United States was in full compliance with the 1987 Intermediate-Range Nuclear Forces (INF) Treaty and that Russia’s decision to develop what he said was a ground-launched SSC-8 cruise missile meant that the treaty was no longer 'effective'. 'All allies agree that the United States in full compliance ... the problem, the threat, the challenge is Russian behavior,' Stoltenberg said', Reuters' article reads.