According to , Hamed said he left the terrorist group because the group practiced the Islamic rules he believed in differently.

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The documents was said to be in form of enrolment forms that included details like their names, relative’s names, mobile numbers, hometown, who recommended them, area(s) of expertise, and blood group.

The document listed names of some known terrorists. The other names might help authorities identify extremists terrorising their countries.

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Sky News reports that one of the files in the given document was marked Martyrs, which is assumed as those trained to carry out suicide attacks.

Britons like Abdel Bary, Reyaad Khan who joined ISIS in 2013 were on the list.