Thousands of refugees are crossing into Slovenia from Croatia after Hungary closed its border to them.

The UN refugee agency says that about 4,000 have arrived in Slovenia and most aim to travel on to western Europe.

But there could be delays for some - the Slovenian authorities have said they will restrict the flow of refugees to 2,500 a day.

Meanwhile, Hungary said it had closed its border with Croatia at midnight on Friday because European Union leaders had failed to agree a plan to stem the flow of asylum seekers.

Last month it also shut its frontier with Serbia.