BRUSSELS (Reuters) -The GPS system of European Commission President Ursula von der Leyen's plane was jammed while en route Sunday to Bulgaria, an EU spokesperson said on Monday, confirming earlier media reports. "We can indeed confirm that there was GPS jamming, but the plane landed safely in Bulgaria. We have received information from the Bulgarian authorities that they suspect that this was due to blatant interference by Russia," the spokesperson said. (Reporting by Bart Meijer, Writing by Charlotte Van Campenhout, Editing by Benoit Van Overstraeten)