Number of refugees trapped at border, Piraeus builds up

``FYROM's action on its border was already having a knock-on effect in other parts of Greece yesterday. Thousands of migrants arriving at Piraeus from the Aegean islands, where almost 8,000 people arrived between Friday and Sunday, were held back at the port to avoid further overcrowding at Idomeni. Some were taken to the new transit center at Schisto.''