The poor quality video, which shows five men beheading the civilian and then holding the head up to the camera, is being examined by the FBI.
The video was posted to the Muntada Al-Ansar website, a militant group believed to be affiliated to Al-Qaeda.
http://apnews.myway.com/article/20040512/D82GP9B80.html
http://www.drudgereport.com/iiraq3.htm
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