Tensions flared between migrants and police at Hungary's southern border with Serbia on Tuesday.
Migrants made two attempts to break free from a police line at a collection point for migrants in Roszke but were pushed back.
In one of the attempts, as many as 200 migrants and refugees broke out of the collection point and fled into a nearby cornfield.
There were chaotic scenes and some minor scuffles as police struggled to keep them back.
Some migrants said the situation at the collection point was so bad that they wanted to return across the border to Serbia, but police wouldn't let them.
Many had slept outdoors in a field in cold night temperatures, and had hoped to be bused to a registration centre.