(ANSA) - BELGRADE, Serbia (AP) - Four nations along Europe's Balkan refugee corridor shut their borders Thursday to those not coming from war-torn countries such as Syria, Afghanistan or Iraq, leaving thousands of others seeking a better life in Europe stranded at border crossings.

The overnight decision was exactly the domino effect that both asylum-seekers and European nations had feared would happen given the record number of people fleeing to Europe this year and new fears after the deadly Paris attacks of possible militants coming in with refugees.

Macedonia was not allowing in from Greece people from Morocco, Sri Lanka, Sudan, Liberia, Congo or Pakistan, the UNHCR spokeswoman in Serbia, Melita Sunjic, said Thursday. Slovenia also said it has closed its border for the so-called economic migrants. On the Serbian border with Macedonia, the Serbs were only letting in migrants from Syria, Afghanistan and Iraq. And on the Croatia-Serbia border, Croats were only accepting people from those three countries plus Palestine, she said. (ANSA-AP).