KASTANIES, Greece (AP) — A child died when a boat full of migrants heading to a Greek island capsized Monday, part of a wave of thousands trying to push through Greece’s land and sea borders.

The child’s death was the first since neighboring Turkey announced Thursday it was easing restrictions on those wishing to cross to Europe, and thousands of migrants began massing at the frontiers with Greece.

Greek authorities said they had stopped more than 24,000 attempted illegal crossings at the land border with Turkey since early Saturday, and arrested 183 people — very few of whom were Syrians.

Turkey’s announcement marked a dramatic departure from its previous policy of containing refugees and other migrants under an agreement with the European Union.