A video claiming to show the execution of British hostage Alan Henning has been released by Islamic State militants.
The video of his beheading has yet to be verified.
IS had threatened his murder in a film last month of the killing of fellow UK hostage David Haines.
UK correspondent Olly Barratt reports.
IN: "This is…
OUT: …authorization."
DUR: 37 seconds
OUT: …authorization."
DUR: 37 seconds