Title: Former Egyptian Interior Minister: We Gave CIA Early Warning about 9/11. Source: MEMRI TV. Date Published: September 14, 2014.
"I told him [Mubarak] that we had warned the CIA, and he said that he would tell them. The CIA told Bush that they had received no warning about the attack, but Mubarak insisted that we had warned them. Finally, they admitted that it was true, but said the warning hadn't been in writing." The CIA, always one for following official bureaucratic procedure.