The European border agency says it will deploy 20 border control officers from across Europe to Poland to assist in the smooth and safe passage of thousands of fans going to World Cup matches in Russia's Kaliningrad region.

Frontex on Tuesday said it will help Poland's Border Guards communicate with foreign fans and smoothly check their documents. Ticket holders with so-called Fan ID need no visas, only their ID documents, in order to enter Russia's territory during the World Cup. Many are expected to travel through Poland to the four matches to be played in Kaliningrad Stadium from June 16-28.

Officers to be deployed come from Spain, Latvia, Bulgaria, Norway, Germany, Switzerland and Greece.