A Syrian toddler has drowned at a beach in southern Greece, after wandering away from his parents and exiting a migrant camp.

The boy, aged two-and-a-half, left the camp located in the city of Andravida in the western Peloponnese region without his guardians realising.

After leaving the camp, the little boy drowned on a nearby beach on Sunday afternoon.

Greek officials have launched an inquiry into the incident.

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Meanwhile, 570 people from the migrant camp of Moria on the island of Lesvos are being transported via ferry to the port of Piraeus, where they are due to arrived on Monday morning.

According to authorities, their re-location is part of a plan to reduce overcrowding at the camp – a space designed for 3,00 people, and currently housing 13,000.

After arriving in Piraeus the migrants will be moved to a camp near Thessaloniki, according to reports.