Most illegal migrants reach Polish territory via the eastern border – from Russia, Lithuania, Belarus and Ukraine. It is expected that after Poland's accession to the European Union, the number of uninvited guests may increase, reports UKROP. Currently, refugee centers are located inland, which forces the authorities to spend significant sums on transportation. Therefore, according to the director general of the Office for Repatriation and Foreigners, Jan Węgrzyn, new centers will be built along the eastern border in Przemyśl, Biała Podlaska, Białystok and Kętrzyn.