Thousands of refugees and migrants urgently need proper shelter in Bosnia-Herzegovina after weeks outdoors in freezing cold, the UN has warned.
Some 2,500 people are in unheated tents or sleeping rough near the northern town of Bihac. A UN official says some are now being moved to heated tents.
Local authorities have refused to reopen a nearby reception centre.
Instead hundreds have been forced to return to a temporary camp that was ravaged by fire last month.
Peter Van der Auweraert of the UN’s International Organisation for Migration (IOM) showed photos of the basic tents erected at the Lipa camp by the Bosnian army a few days ago.
The camp was set up hastily in the summer when the coronavirus pandemic forced crisis measures including border closures.
But aid agencies pulled out of the camp in December, saying it was unsustainable without water and electricity.
Some residents forced to leave the facility looted equipment and set fire to tents, police said.
However, about 900 migrants had to go back there, after local officials refused to let them move to the empty reception centre in Bihac. Another 1,500 are struggling in primitive conditions elsewhere near the town.
The migrants are from South Asia, Africa and the Middle East, and got stuck in Bosnia while trying to reach Croatia, an EU member state seen as a gateway to the EU.
Some of the migrants have refused to use the tents in Lipa because they lack heating and sanitation. Some also went on hunger strike, angry at the lack of amenities. But on Tuesday many did receive Red Cross food parcels.
“We want people in proper reception centres where they have access to services, like the 6,000 other people in Bosnia,” Mr Van der Auweraert, the IOM’s head in Bosnia-Herzegovina, told the BBC’s Balkans correspondent Guy De Launey at Lipa.
The IOM says about 8,500 non-EU migrants are living in Bosnia, still hoping to get to northern Europe.