Slovenian police halted a train on Thursday carrying refugees at the Dobova train station on Slovenia's side of the border with Croatia.

"The train with some 200 refugees on it has been stopped," police spokeswoman Vesna Drole told Reuters.

This is the largest group of refugees that has tried to enter Slovenia since the refugee crisis erupted in Europe, police statistics show.

The police said they would make a statement later on Thursday.

The Slovenian government said on Monday it would not allow illegal migrants to pass through Slovenia but it would enable them to ask for asylum.

A Reuters TV crew said migrants tried to leave the train but were stopped by the police.