A online post shows one hostage holding a photo of what appears to be the body of the other . The video was posted on YouTube by an account called Islamic State in Iraq and Syria (ISIS), which has been linked with several recent attacks against Western targets. An ISIS-affiliated radio station reports the killing of one hostage and the prisoner swap demand .
A online post shows one hostage holding a photo of what appears to be the body of the other . A voice , purportedly of a hostage , calls for the release of a terrorist in Jordan . An ISIS-affiliated radio station reports the killing of one hostage and the prisoner swap demand .