New clashes have broken out between Macedonian police and stranded refugees and other migrants trying to scale a fence on Greece's border with the country.
Greek authorities say Macedonian police fired tear gas and stun grenades to deter a group of about 30 people from trying to get over the razor-wire fence using blankets.
No injuries were reported from Wednesday's clashes at the closed Idomeni border crossing in northern Greece. On Sunday, severe clashes between stone-throwing migrants and Macedonian police using tear gas, stun grenades, rubber bullets and a water cannon left scores injured
About 11,000 people have been living in an informal tent city on the Greek side of the border for weeks, hoping Macedonia will let them continue their trek towards Europe's prosperous heartland.