The killing of womenbymalerelatives whobelieve they have dishonored the family-eg, bygetting pregnantoutsidewedlock or wearing revealing clothes-has haunted Turkeyfor centuries.
But the killing of Vice-President Luis Maria Argana in 1999 and accusations by his relatives that Mr Oviedo had been behind the killing sent him into exile.
After decades of dead ends in the case, police said they were tipped off to Mr. Hernandez's possible involvement by relatives to whom he had spoken over the years about killing a child in Manhattan.