Another beheading video, released by Islamist terrorists this evening, has threatened that the next hostage to die will be British.
This latest one shows the death of a second American journalist - Steven Sotloff - once again at the hands of a hooded, British-sounding man.
Mr Sotloff's death was threatened in the first video two weeks ago.
This report by ITV News international affairs editor, Rageh Omaar does not contain the most upsetting images from the latest video, but some of it is distressing:
I've been told at the Nato summit that the intelligence services know exactly who 'Jihadi John' is - or at least are 99.9% certain.
The British aid worker being held by Islamic State is David Haines, a 44-year-old father-of-two from Perth, Scotland.
In a video statement which claims to record his final words US hostage and journalist Steven Sotloff blames US foreign policy for his death.