Greece will move hundreds of migrants from a camp on the island of Lesbos to mainland facilities on Sunday as part of efforts to ease overcrowding, police and government officials said.
The group will leave the Moria camp on the eastern Aegean island, which is close to Turkey.
Greece has been the main gateway into the EU for people fleeing conflict in the Middle East and beyond. More than a million people reached its shores from Turkey in 2015-16.
At least 110,000 people are living in migrant facilities – 40,000 of them in overcrowded camps on five islands.
No coronavirus cases have so far been recorded in Greek island camps. But aid groups have urged Athens to evacuate the camps, warning that the risk of the fast-moving coronavirus spreading amid squalid conditions is high.