Hungary has threatened to arrest anybody who crosses the country's border illegally from next week.
Prime Minister Viktor Orban claims that thousands of refugees and migrants entering the country have "rebelled" against authorities in Hungary and order needs to be restored.
Orban has strongly criticised the behaviour of the mostly-Muslim migrants who arrived arrived in the country from war-torn areas of Africa and the Middle East, including Syria - framing the crisis as a battle to preserve Europe's "Christian identity".
Mr Oban's strong stance comes as footage emerged showing Hungarian authorities throwing food to a crowd of refugees and migrants at a camp near the Serbian border.
The video shows a number of people trying to catch food packs - containing sausage rolls and bottled water - thrown by police wearing surgical masks in Roszke yesterday.
Michaela Spritzendorfer, who filmed the scenes, said the refugees were being treated "like animals".
The United Nations has strongly criticised Hungary for the worsening conditions in Roszke, where some 300 families are camped out in the hope of travelling further north to Austria and Germany.
Spokesman William Spindler said the UNHCR was "closely following" Hungary's use of the army to control the situation.
"Obviously we expect authorities to respect rights of refugees whether they are the police or army," he said.