A child has drowned after a boat with migrants rolled over into the sea on the Greek island of Lesbos, Reuters reported.

Over 10,000 migrants, mainly from Syria, other countries of the Middle East and Afghanistan, reached Turkey’s land borders with the EU states - Greece and Bulgaria, as Ankara said last Thursday it would cease to contain them on its territory.

Greek and Turkish police used tear gas against people who ended up between fences on no man's land last weekend. About 1,000 more migrants reached the eastern Aegean islands of Greece on Sunday morning, according to Greek police.

The Greek coast guard reported that a boat that had flipped over at Lesbos was escorted by a Turkish ship. Forty-six people were saved, two children have been hospitalized, but one could not be saved.

Another boat with 30 Afghans arrived early in the morning. The coast guard reported that another thirty-two people were rescued at sea near Farmakonissi, a small island near Turkey.

“This is an invasion,” Development Minister Adonis Georgiadis told Skai TV on Monday.

Greek officials accused Turkey of organizing a coordinated effort to move migrants across the border. One Greek policeman accused Turkish soldiers of “giving cutters” to migrants to cut holes in the fence to get through it.

Migrants on the Turkish side of the border called on Greek soldiers and riot police to open the gates and let them in, saying that they had children and women. Some of the were with white flags.

Spokesman Stelios Petsas said the migrant surge poses “an active, serious, severe and asymmetrical threat to national security”.