Greek army patrols borders, migrants try to enter

Greek authorities on Wednesday arrested a group of migrants in Ardanio, as thousands of other migrants and refugees searched for ways to cross Greece's border with Turkey.

Athens has ramped up its diplomatic efforts for help from the European Union to seal off its eastern land and sea frontiers, after Turkey said its own border with Europe was open to whoever wanted to cross.

The action by Turkish President Recep Tayyip Erdogan triggered days of violent clashes and scenes of chaos at the land border, while hundreds of others have headed to Greek islands from the nearby Turkish coast in dinghies.

Greece has struggled to push back the wave of migrants, with its armed forces now leading the effort.