The Hungarian police on Monday rounded up 9,380 refugees who were crossing into the country from Serbia, the highest daily figure this year.
Hungary warned that refugees entering the European Union across its southern border with Serbia faced potential expulsion within days under a crackdown to confront Europe's worst refugee crisis in two decades.
Late on Monday, police >blocked off the main unofficial border crossing point used by refugees.
As tough, new border laws and powers to expel asylum seekers entered into force at midnight, Hungary's right-wing government sealed off a railway track used by tens of thousands of refugees, many of them Syrians, to enter the EU this year on foot.
