Time magazine has said that its staff are "shocked and deeply saddened" over reports of Steven Sotloff's death. Mr Sotloff was a freelance journalist who worked for the magazine.
We are shocked and deeply saddened by reports of Steven Sotloff's death. Steven was a valued contributor to TIME and other news organizations, and he gave his life so readers would have access to information from some of the most dangerous places in the world. Our thoughts and prayers are with him and his family.
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.