Austrian Daily Newspaper Kurier today reported, that there was another incident yesterday, that jammed transponer-signals for planes in high altitudes in the ACC-regions of Vienna, Praha, Munich and the UAC of Karlsruhe (EDUU) between 1:30 and 3:00 pm local time.
The incident was confirmed by a spokesperson of Austrian ANSP Austro Control. The reasons for the phenomenon was unknown. Since it was the second transnational issue within 5 days EUROCONTROL and EASA have started investigations.
Austro Control: Wieder Störangriff auf Flugsicherung - KURIER.at (german only)
Any thoughts on that developments?