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DUBAI, June 4 (Reuters) - Web sites often used by al Qaeda-linked groups said on Monday they would soon show the abduction of three Americans, apparently referring to three U.S. soldiers who went missing in Iraq last month after a clash.

"God willing, after some hours the Furqan Institute will present the clash and the detention of three Americans," the Web sites said, without giving further details.

Furqan usually issues videos of attacks by al Qaeda in Iraq.

The U.S. military has carried out an intensive search and found the body of one of the three U.S. soldiers missing after an attack south of Baghdad.

It has said it believed they had been taken by al Qaeda or others associated with the militant group, after an al Qaeda-led group said it was holding the soldiers.

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