Hundreds of Moroccans, Algerians, and Pakistanis tried to storm the border between Greece and Macedonia, tearing down part of the barbed wire fence at the crossing and demanding to be allowed to carry on into northern Europe.

The top security officials of Germany, France and Britain are pressing for better processing of migrants arriving in southern Europe and for a European Union-wide list of countries considered safe.

The discovery of a lorry containing the corpses of over 70 refugees on an Austrian motorway has given added impetus to a key summit on migration in Vienna.

Austrian police have discovered the badly-decomposing bodies of at least 20, and possibly up to 50, migrants piled in a truck parked on the shoulder of the main motorway from Budapest to Vienna.