Turkish authorities say three women and an infant have died after a fiberglass boat carrying migrants to Greece sank off the Turkish coast.

The coast guard said 11 other migrants were saved in an air and sea search mission launched early Tuesday off the town of Ayvacik, in northwest Canakkale province.

The privately owned DHA news agency said the boat, carrying 15 migrants from Iran and Afghanistan, was heading to the Greek island of Lesbos. The three women and the infant who died were from Afghanistan, the report said.

Migrants have been trying to get from Turkey into Greece, which is in the European Union, before heading to more prosperous European nations.

A 2016 deal between Turkey and the EU significantly curbed numbers but migrants still attempt the perilous journey.