Some 6,900 refugees will be evicted from a makeshift refugee camp in the French town of Calais beginning Monday morning.
More than 1,200 of those being evicted from the camp, which has been dubbed "The Jungle," are children.
Authorities have given the refugees two options: return to their home country or seek asylum in France, according to CNN.
Clashes between refugees and police erupted Saturday night, said Sue Jex, of Care 4 Calais.
It's very tense because people know that change is coming.
An Interior Ministry spokesman told CNN that more than 1,000 riot police were deployed to the camp Sunday ahead of the closure.
The French government plans to have the camp torn down by December. Currently, the camp covers about 40 acres of sand dunes that were once used as a landfill.
Authorities told CNN the residents will be processed on a first come, first served basis beginning Monday morning at 8 a.m.
The refugees were given a letter Sunday explaining that they should go to a reception point Monday so they can be put on buses.
"Everybody living in the Calais jungle will have to leave in order to be sheltered in one of the French reception and counseling centers," the letter said.
CNN reported that the letter also assured migrants that they would receive food and a place to stay.
Most of the migrants in the camp are from Sudan, Eritrea, Ethiopia and Afghanistan. Some refugees from Iraq and Syria have also set up temporary homes in "The Jungle."
The French government said those who apply for asylum will choose between two French regions and will be taken to their location of choice by bus.
Up to 60 buses are expected to leave the camp Monday.
Anyone who decides to return to their country of origin will be taken there by plane.
Those who have already sought asylum in other European countries will be taken to that country while their application is processed.