Croatia has opened its border with Serbia, the British broadcaster added.
Slovenia introduced earlier a daily limit of 2,500 migrants to cross its border, refusing Croatia’s request to put the number at 5,000, due to Austria’s own daily border crossing caps. Hungary, another migrant transit country, has closed its borders.
Over 710,000 migrants arrived in the European Union within the first nine months of 2015, according to the EU border agency Frontex, with Hungary and Slovenia just two of the many transit points for refugees on the route to the European bloc.
In September, the European Commission announced a quota scheme, providing for the resettlement of 160,000 refugees currently located in Greece, Italy and Hungary, throughout other European countries.