A police statement Monday said the 11 Algerian men were taken to a hospital where one was treated for hypothermia.

Police said the immigrants tried to cross the Evros River in two inflatable dinghies, which were swept away by floodwaters and caught on a sandbar on Sunday afternoon. They called for help and were rescued two hours later.

The Evros, which runs along the Greek-Turkish border, has claimed the lives of at least 15 illegal immigrants since late September.

Debt-crippled Greece is the main gateway to the European Union for illegal immigrants from Asia and Africa, with tens of thousands arriving every year, mostly through Turkey.