The field of suspects in the murder of James Foley has been "narrowed down significantly" although a definitive identification has not yet been made, security sources told The Times, with the newspaper also reporting that police raids are set to be launched to find the killer.
Security services want to speak to an east London doctor who may provide clues on the British extremist, according to the Daily Express.
The Sun, meanwhile, identifies a 23-year-old former DJ as the man police want to question.
A British family have told ITV News of their devastation after discovering a close relative is fighting with the Islamic State in Iraq.
A French journalist who was held hostage with James Foley in Syria has told ITV News it was "devastating" to see his murder.