A former student at University of Westminster has been identified as 'Jihadi John', the masked terrorist who beheads hostages held by Islamic State.
The Washington Post newspaper claimed his real name was Mohammed Emwazi, a computer programmer from west London.
The paper said he was raised in a middle-class neighbourhood and prayed at a mosque in Greenwich.
Those who knew him say he was polite and had a penchant for wearing stylish clothes while adhering to the tenets of his Islamic faith. He had a beard and was mindful of making eye contact with women, friends said.
Mohammed Emwazi left the University six years ago. If these allegations are true, we are shocked and sickened by the news. Our thoughts are with the victims and their families.
Scotland Yard refused to confirm the reports.
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.