The victims were identified as Yvette M.
The woman, only known as Hajer, also reveals that the British female jihadists would be the most sadistic torturers, and would use a tool known as a 'biter', reportedly able to inflict pain 'worse than childbirth'.
Olson said she agreed to do the video interview — recorded last year at her home in L.
Pictured is a similar looking plier The tool has been described as a device similar to a hunting trap - a metal clamping jaw with sharp teeth that cut into the flesh of the victim.
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Shyla Stylez, 35, died in November and her cause of death is still unknown.