A group led by al-Qaida in Iraq said it would soon post a video about a "missing" U.S. military man, according to a statement posted on the Internet on Thursday.
The posting from the media arm of Islamic State in Iraq showed what appeared to be the military identification of the man, next to a picture of a fighter plane, suggesting he was an airman.
A U.S. military spokesman in Iraq said he had no immediate information on this.
The name on the ID card appeared to be Troy Gilbert, a U.S. Air Force pilot whose plane crashed in November 2006. He was declared dead based on human remains found at the site of the crash, according to a U.S. military Web site.
The posting resembled one issued in June about three missing U.S. soldiers. It was followed by a video which said al-Qaida in Iraq had killed them after capturing them south of Baghdad. It provided no evidence apart from pictures of ID cards of two of the men.
The videos advertised on Islamist Web sites often appear hours or days later.
The Islamic State in Iraq, a group formed last year by al-Qaida's wing in Iraq and other Sunni insurgents, has claimed responsibility for mass kidnappings and a series of major attacks.