Poland's president has thrown his support behind the government's decision to renege on a deal to accept thousands of refugees amid security concerns raised by Tuesday's attacks in Brussels.

Poland's decision could further affect other countries in the region, some of which have protested the European Union's plan to allocate some 120,000 migrants. Additionally, European leaders last week struck a deal with Turkey aimed at limiting the influx of migrants to Europe.

Poland's anti-migrant government had grudgingly confirmed the previous commitment to take in 7,000 refugees. But following the Brussels attacks Prime Minister Beata Szydlo said "I see no possibility for migrants to come to Poland now."

On Thursday, the spokesman for Polish President Andrzej Duda confirmed that decision and said Europe has failed to efficiently check the arriving migrants.