A new video by the militant Islamic State group claims that US aid worker Peter Kassig has been beheaded.
In the 16-minute video uploaded to social networks today, a black-clad militant with his face concealed stands before a body he claims is that of Mr Kassig.
The 26-year-old was captured last year while helping provide medical aid to Syrians. His friends say he converted to Islam in captivity and changed his name to Abdul-Rahman.
The video also shows what appears to be the mass murder of several captured Syrian soldiers.
It was not immediately possible to confirm that Mr Kassig was pictured in the video. Family representatives were not available for comment.