A new video purportedly shows another beheading of a Western hostage, British aid worker Alan Henning, by an Islamic State militant, according to the Associated Press.

While the wire service is still confirming the authenticity of the video, it reportedly mirrors previous beheading videos. At the end of the video, the militant threatens to kill an American hostage next.

“Obama, you have started your aerial bombard of Shams [Syria], which keep on striking our people, so it is only right that we strike the next of your people,” the man in the video says.

Henning had been in captivity since December of last year after he was taken crossing the Syria–Turkey border. Last week, CNN reported that the British foreign office released audio of Henning pleading to be spared.