He has also expressed support for a border and coast guard as proposed by the European Commission.

The prime minister was talking to the press in Brussels on Thursday after a mini-summit of EU members willing to take in refugees and those on the Balkan route, which were joined by Turkey.

"Until there is so much transit, until we have to take care of several thousand refugees a day...we cannot accept [additional] refugees," Cerar said ahead of the summit of EU leaders.

The country nonetheless supports a joint effort to move refugees from Turkey, but this must be done in consideration of the country's integration capacities, he added. Official decisions will however be taken at the EU summit, he underscored.

He described the meeting, hosted by Austria before the EU summit, as an informal discussion on the implementation of the Turkey migration plan. They did however not discuss any numbers, he added.

The meeting also called on Turkey to meet its obligations as soon as possible - to hold back as many refugees as possible and use the EU funds provided to enable education and social security to refugees, said Cerar.

The prime minister moreover talked about the border and coast guard planned by the European Commission, expressing Slovenia's support for the proposal presented earlier this week.

"Slovenia will support this and will take part in this project in line with its capabilities," said Cerar. "I have been advocating this very strongly from the beginning."

"Slovenia wants efficient control of the external EU borders and this is definitely one of the key steps." He believes the planned institution will not be able to take action on the border between Slovenia and Croatia, because this border is not part of the EU's outer border.

"This does not concern us, this is above all the problem of the Greece-Turkey border and the Italian border toward Africa." Cerar also noted that a great number of migrants were also coming to Europe through Asia.