At least 12 migrants, including five children, drowned and about 10 went missing after their boat sank overnight off the Greek island of Farmakonisi, Greek maritime police said Wednesday.At least 26 people were saved as the search continues in the southeastern Aegean Sea for other survivors from the capsized wooden boat. A Greek army helicopter and a ship from the European Union's border agency Frontex were deployed to help with the search. The dead also included two women and four men.Witnesses said the boat sunk despite calm waters and feeble winds. On Tuesday, at least six children died when a boat carrying Afghan migrants sank in Turkish waters while on its way to Greece.The Turkish Coast Guard recovered the bodies of the children, including a baby, and were still looking for two other migrants reported missing, the official Anatolia news agency said. The inflatable dinghy sank in strong winds and high waves near the town of Çeşme in the western İzmir province. It was apparently heading for the Greek island of Chios.