"I've just been informed that the Department of Defense has informed the committee that another disc of pictures has been located and I'll soon advise the committee on the conditions and time in which they can be viewed," said Warner, chairman of the Senate Armed Services Committee.

Three other CD-ROMs have surfaced with digital photographs and video clips of abuse of prisoners at Abu Ghraib prison outside Baghdad.

A letter sent to Warner from the Pentagon late Tuesday said that Pentagon officials received a disc with 24 photographs depicting "apparent abusive acts by US forces."

Assistant Secretary of Defense Powell Moore wrote in the letter, which was released by Warner to members of the media Wednesday, that the disc had been sent to the Criminal Investigation Command in Baghdad for forensic computer evaluation.

"Thirteen photographs appear to be images already seen on international television media," the letter said.

"The other 11 images have not been identified in previous investigations," the letter continued, adding that it was not clear whether the images were genuine or fakes.

WAR.WIRE