Turkey's coast guard was searching Monday for four Afghans missing after a boat with illegal migrants sank in the Aegean Sea over the weekend, news reports said. The coast guard found one body and rescued 15 people after the vessel, believed to be carrying 20 Afghans, sank near the port town of Edremit overnight Saturday, the Anatolia news agency reported. The coast guard was using boats and helicopters Monday to search for the four missing Afghans, Anatolia said. Private CNN-Turk television said the boat capsized while heading toward a nearby Greek island.