Slovakia is under fire for its preference to grant asylum to migrants who are Christians.

Council of Europe Secretary General Thorbjorn Jagland says in a Thursday statement on Twitter: "Refusing refugees on the grounds of their religion is blatant discrimination," adding "Slovakia should reverse its position."

Slovakia, the Czech Republic, Hungary and Poland in June blocked a European Union plan for member countries to take set numbers of refugees arriving in Italy and Greece. The four said they were ready to help but only on a voluntary basis.

Slovakia later announced it was ready to accept a hundred Christians from Syria and temporarily provide shelter for 500 migrants, also non-Christians, who have applied for asylum in Austria. Officials did not say whether the 500 could include non-Christians.