Five people drowned on Saturday as a boat carrying migrants and refugees from Turkey capsized off a Greek island.
The boat capsized off the northeast coast of the island of Samos, close to the Turkish shores, Xinhua news agency reported.
So far, the bodies of four women and one child have been found. Five people were rescued.
The exact number of people on board remains unclear.
The incident occurred a day after a second batch of 124 refugees and migrants was returned to Turkey from Greek islands, under the EU-Turkey deal to cope with the refugee crisis.
The flow of refugees and migrants into Greece from the Turkish coasts continues in reduced numbers. According to UNHCR, 483 people arrived at Greece this week, compared to 2,618 arrivals last week.