CAGE spokesman Cerie Bullivant was being interviewed by presenter Kay Burley over reports that the ‘Jihadi John’ had been identified as west Londoner Mohammed Emwarzi, 27.
The human rights group had previously been in contact with Emwarzi for two years, and said the security services had harassed him.
“What level of harassment by security services in the United Kingdom justifies beheadings?” Ms Burley asked Mr Bullivant.