Migrants flooding into Croatia will be "moved on", PM Zoran Milanovic has warned, adding that his country cannot become a "migrant hotspot", BBC reported.
He said the country's borders would not be shut completely, but it had reached its limit.
His remarks came as Croatia closed seven of eight road crossings after a huge influx of migrants seeking onward passage towards northern Europe.
More than 14,000 have entered Croatia, with tensions high and many exhausted.
Huge numbers heading north through the Balkans have triggered an EU crisis.