Ankara police have led a raid aimed at the financial structure of DEAŞ, the terrorist organisation known abroad as ISIS. Fourteen suspects were taken into custody during coordinated operations. Officials describe the sweep as a heavy blow to how the group funds itself. Investigations of this kind typically target money couriers or front businesses used to move cash quietly. The authorities released no names or further details about the detainees. Questioning will now determine whether the suspects face formal charges of financing terrorism. Turkey has run similar operations against the organisation's funding channels in previous years.