Don't know which is more disturbing - that these people were hidden or why we could have been hiding them: The Central Intelligence Agency kept dozens of detainees at Abu Ghraib prison and other detention facilities in Iraq off official rosters to hide them from Red Cross inspections, far more than has been previously reported, two senior Army generals said today. An inquiry by three generals issued last month found eight documented cases of so-called 'ghost detainees,' but two of the officers said in congressional testimony and interviews later that depositions with military personnel at the prison suggested the number was far higher. 'The number is in the dozens , and perhaps up to 100,' Gen. Paul J. Kern, the senior officer who oversaw the inquiry into the role of military intelligence personnel in the prisoner-abuse scandal, told the Senate Armed Services Committee. He added that a precise number would never be known because there were no records kept on most of the C.I.A. detainees.