VIDEO: Serbia calls Hungary "brutal" over treatment of migrants at border

At least 29 people were detained including a suspected “terrorist” after some of the worst violence seen between police and migrants at Hungary’s now shut EU frontier.

The use of water cannon and teargas has been widely criticised by both Serbia’s prime minister who said it was “brutal” and “non-European” behaviour, while Montserrat Feixas Vihé of the UN’s refugee agency, UNHCR, said she was shocked.

“I’m extremely distressed because you know to see people who have been injured, to see children crying because they’re separated from their parents. People we know who have been separated from they’re families, who you know have been hurt," she said.