Roughly 2,500 refugees are trapped between Serbia and Croatia, with little food and shelter.
Hungary sealed off its border with Serbia this week, cutting off a key route into the EU, meaning that many refugees escaping the war in Syria are entering Croatia instead. In response to the influx, Croatia closed most of its border with Serbia on Sunday, which caused many refugees to try and get around the blockade by venturing into the country via fields and vineyards at the border.
As many of 5,000 people are flowing through countries south of Serbia every day.
"As you can see, this is a serious humanitarian situation. If you go to the crowd, you will see women with children, with disabled people, they are all trapped," UNHCR coordinator Iroda Asqarova told Reuters.
Story by Allan Smith and editing by Chelsea Pineda.
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