Germany says it has obtained files on Islamic State members

The broadcaster said the files were passed on to them on a memory stick stolen from the head of Islamic State's internal security police by a former fighter who had grown disillusioned with the group.

The material also seems to have the potential to help authorities crack recruitment networks in Europe and elsewhere that have been sending fighters to join the Islamic State group, which has seized large swaths of land in Syria and Iraq and declared a self-styled caliphate on the territory under its control.