According to testimony from the survivors, 49 people had been on board the dinghy when it capsized in the Aegean Sea off the northern coast of Lesbos

A woman and a child drowned off the Greek island of Lesbos after their boat sank, although 45 other people were rescued, police said Wednesday.

The Greek harbor police did not give the victims’ ages and it was not clear if the two were related.

According to testimony from the survivors, 49 people had been on board the dinghy when it capsized in the Aegean Sea off the northern coast of Lesbos.

The island has become one of the main points of entry for thousands of migrants coming from Turkey whose coastline lies just eight nautical miles away.

Some 515,000 people have reached Europe by crossing the Mediterranean this year, figures from the U.N. refugee agency show, many of them taking perilous journeys in inflatable dinghies.

More than half of them are fleeing the conflict in Syria.

Nearly 3,000 people have died or disappeared making the crossing since January, the agency said earlier this week.