Islamic State’s “Jihadi John” has been named in reports as Londoner Mohammed Emwazi.
According to the Washington Post and the BBC, Emwazi has been identified by friends and others familiar with his case.
The IS frontman, who has appeared in a series of shocking videos in which hostages are brutally murdered, is reported to have grown up in west London and graduated from university with a degree in computer programming.
Scotland Yard has refused to confirm the reports.
Commander Richard Walton, head of the Met’s Counter Terrorism Command, said: “We have previously asked media outlets not to speculate about the details of our investigation on the basis that life is at risk.
“We are not going to confirm the identity of anyone at this stage or give an update on the progress of this live counter-terrorism investigation.”