The European Union must stay united in its response to the migration crisis, top officials say, expressing worry that a "humanitarian crisis" could be in the making.
"We are concerned about the developments along the Balkan route and the humanitarian crisis that might unfold in certain countries, especially in Greece," EU Migration Commissioner Dimitris Avramopoulos and Dutch Migration Minister Klaas Dijkhoff, whose country holds the EU's rotating presidency, say in a statement.
"We call on all countries and actors along the route to prepare the necessary contingency planning to be able to address humanitarian needs," they add. "All member states should act in a joint spirit of solidarity and responsibility, especially in times when unity and common solutions are needed."
European Commission spokeswoman Natasha Bertaud had said earlier that the EU's executive is concerned about some countries in the bloc "acting outside of the agreed framework," adding: "We believe that member states should work together and not against each other."