NATO says it is not to blame for dozens of aircraft briefly vanishing from air traffic control radar screens in Austria, Germany, the Czech Republic and Slovakia.
The Slovak state Air Traffic Services company said the brief disappearance of planes from radar screens on the 5th and 10th of June was connected to a military exercise with the goal of "the interruption of radio communication frequencies".
Austrian media claimed NATO had been responsible. However the military alliance said while it did carry out training involving "localised and low-power jamming" in the skies over Hungary during the 2nd-6th June period, it denied conducting any jamming on the 5th.
"Our assessment is that NATO did not cause any interference with civilian air traffic control frequencies. When NATO conducts such exercises, we coordinate our activities with relevant civilian authorities and only use frequencies provided to us by the host nation," a NATO military officer said.