MOSCOW, April 19. /TASS/. Luxembourg's ambassador to Moscow Georges Faber has been summoned to the Russian Foreign Ministry and protested against the unjustified expulsion of a Russian embassy employee from the duchy, the Russian Foreign Ministry said in a statement distributed on Tuesday.

"Georges Faber, the Ambassador of the Grand Duchy of Luxembourg, was summoned to the Russian Foreign Ministry on April 19," the ministry said, "He was strongly protested by the Russian side against the unjustified decision of the Luxembourg authorities to declare an employee of the Russian Embassy in Luxembourg persona non grata."

The Russian Foreign Ministry pointed out that "this unmotivated and unfriendly step will have a negative effect on Russian-Luxembourg relations." "It is stressed that the Russian side reserves the right to retaliate," the ministry added.

Earlier, the Luxembourg Foreign Ministry decided to declare an employee of the Russian Embassy in Luxembourg persona non grata. The Russian official’s actions allegedly contradict the security interests of Luxembourg. In addition, it was noted that the Russian diplomat should leave the country within two weeks.