An Islamic State fighter who has claimed to have killed an American journalist appeared to be speaking with a British accent.
In the five-minute video entitled "A message to America", a man believed to be James Foley is seen kneeling in an unknown location as a masked IS militant stands by his side.
The fighter, holding a knife, says the killing is a response to US air strikes in Iraq, warning of further attacks against Americans if there is further action in the country.
The victim also made a statement during the video, saying he wanted to ask his friends, family and loved ones to "rise up against my real killers, the US government".
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.