Hungarian border barrier

Hungary, Slovakia and Serbia will continue joint efforts to curb illegal migration into the European Union, their leaders have said, adding that more EU funds were needed.

The Greek government dismissed on Wednesday a report in The New York Times newspaper that it was holding illegal migrants who cross the border from Turkey at a secret "black site" where they are denied access to lawyers and cannot file asylum claims.

Greece released a video clip on Wednesday it said showed Turkish riot police firing tear gas canisters at the Kastanies border crossing, where thousands of migrants are trying to cross into the European Union.

According to Hungarian police, two groups of migrants tried to enter the Hungarian territory illegally near the Rszke-Horgos 2 border crossing this morning at around 5.30.

Hungary has no option and does not want to accept migrants who will be returned from Germany. We are ready to help bring them back to Greece. This was said by Hungarian Prime Minister Viktor Orban.

"From the very beginning of the migrant crisis, the Hungarian position was very sincere and open, despite the fact that it seemed quite unpleasant," Orban said.

According to certain information, Hungary has begun constructing a second fence along the Serbian border to stop the thousands of migrants waiting there from entering.

Hungary has started to build a second fence along the southern border with Serbia, Reuters reported on Monday, citing Hungarian officials.

This move will "likely to exacerbate criticism from some of the country's European Union partners," the agency said.

The Croatian police have detained five migrants from Iran and issued a ban preventing them from traveling to the country again during the next two years.

Croatia has also announced that the migrants, who crossed the border between Montenegro and Croatia illegally and on foot, would be sent back to Montenegro.

Macedonian police and army have been setting up a barbed wire fence in the last two days around a camp in Tabanovce.

Around 1,300 migrants are stranded there.

About 1,000 migrants are stuck in Serbia at present, the acting head of the country's police force, Vladimir Rebic, has said on Tuesday, according to Tanjug.