Many Bosnia watchers say the evidence may be necessary for prosecuting top Bosnian Serb leaders.
Intelligence officials say they are cooperating as much as they can.
Critics also question why the US has not released all the photos to the public. Officials in the administration warn that releasing the photos could prompt the Bosnian Serbs to tamper with the graves. But intelligence officials say they already have evidence that the Bosnian Serbs are exhuming one of the graves. Promise to cooperate Administration officials, responding to complaints from the Tribunal, initially denied that they were withholding information from the Tribunal, and are now promising to fully cooperate. Critics point out that the administration made a dramatic presentation of the Nova Kasaba photos to the United Nations Security Council in August.