Yet processing centers on the Greek island of Lesbos and on several other Greek islands were not adequately staffed to comply immediately with the new measures, and officials said they were waiting for the European Union to follow through on a pledge to send at least 2,300 European police and asylum experts to help.
By Sunday afternoon, around 875 migrants in rubber boats had reached the Greek islands since midnight, the government said, despite an operation in Turkey that began Friday to detain migrants and the smugglers who make their journeys possible.
Many migrants landing in Lesbos on Sunday appeared to be unaware of the new policies and were reeling from their harrowing journey. Greek television showed black and gray rafts arriving at the island laden with people, some sobbing with relief at having reached Europe, and others nearly unconscious. Two little girls were found drowned, and two Syrian refugees died in the crossings over the weekend.
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On Sunday, the Greek government began clearing out more than 6,000 migrants who had been waiting at processing centers and camps on several Greek islands, and transporting them on large ferries to Piraeus, the port of Athens, and to Kavala, a port in northern Greece. From there, they are to be sent to refugee camps recently set up around the country.
Nearly 50,000 migrants are stuck on the Greek mainland at camps, in Piraeus and on Greece's northern border with Macedonia. More than 10,000 people have been living in miserable conditions in the Idomeni camp, on the Macedonian border, after west Balkan countries sealed their borders last month to cut the flow of migrants making their way to Germany and northern Europe.