Kolkata, Sept. 1 -- A jet carrying EU chief Von der Leyen to Plovdiv on Sunday afternoon lost all electrical navigation support when approaching the Plovdivairport in Bulgaria, reports The Sun.

Russian hand in this act is being suspected, according to some officials.

For long, Von der Leyen has been a Vladimir Putin critic.

One of them said to the Financial Times, "The whole airport area GPS went dark. It was undeniable interference."

Von der Leyen's plane was circling the airport for about an hour before deciding to land with old-school paper maps, the official said.

Plovdiv Airport's GPS could have smashed by jamming and spoofing.

Cases of GPS jamming are on the rise in recent years - especially in the Baltic Sea and eastern Europ...