New images surfaced Thursday on the Internet of the self-proclaimed planner of the 9/11 attacks.
The pictures of Khalid Sheikh Mohammed were taken recently at Guantanamo Bay detention camp in Cuba.
Mohammed is thinner than when he was photographed in March 2003, shortly after his capture by Pakistani intelligence. He's seen wearing a white robe with a long beard.
"The pictures were taken with the express purpose of sending them," explained International Committee of the Red Cross spokesman Bernard Barrett. "The detainees sending themselves to the families."
Earlier this year, the U.S. military began giving the Red Cross permission to take pictures of inmates at Guantanamo Bay to send to their families.
The recent picture of Mohammed was taken in July. The ICRC says it sent the pictures to his family and were not intended for the public.
"That was the purpose for them," Barrett said. "What the families do with them, of course, once they receive them, is beyond our control."
However, terrorism experts say the pictures of the 44-year-old paint a very different image.
"When he was captured in March 2003, the capture photos that were released showed him all disheveled, he looked terrible, he was kind of the monster. We all had in our minds for who planned 9/11," said expert Jarret Brachman. "These photos make him look like he's a peaceful, thoughtful and reflective man, even a pious Muslim."
That's the kind of image that could become a tool to rally support for al Qaeda.
"What I anticipate happening is al-Qaida now has a new stock of imagery that they're going to be able to use," Brachman added. "So this will probably launch a second wave of propaganda both about 9/11, but also specifically about Khalid Sheik Mohammed the man."
The images have already gone viral since their release earlier this week. On several jihadist Web sites and forums, there was praise for the man and calls for attacks on Americans.
"And they're celebrating the release of these photos," Brachman said. "They're screaming 'praise be to God' in some cases. In other cases they're saying 'let's go kill Americans.' This is a renewed call to them for violence."
Meanwhile, the United States not decided whether to try Mohammed and other co-conspirators in a federal court or military tribunal.