Perhaps most astounding of the many mistakes, according to Flessner and an affidavit filed by Wright, is how an FBI agent named Gamal Abdel-Hafiz seriously damaged the investigation. Wright says Abdel-Hafiz, who is Muslim, refused to secretly record one of al-Kadi's suspected associates, who was also Muslim. Wright says Abdel-Hafiz told him, Vincent and other agents that "a Muslim doesn't record another Muslim."

"He wouldn't have any problems interviewing or recording somebody who wasn't a Muslim, but he could never record another Muslim," said Vincent.

Wright said he "was floored" by Abdel-Hafiz's refusal and immediately called the FBI headquarters. Their reaction surprised him even more: "The supervisor from headquarters says, 'Well, you have to understand where he's coming from, Bob.' I said no, no, no, no, no. I understand where I'm coming from," said Wright. "We both took the same damn oath to defend this country against all enemies foreign and domestic, and he just said no? No way in hell."

Far from being reprimanded, Abdel-Hafiz was promoted to one of the FBI's most important anti-terrorism posts, the American Embassy in Saudi Arabia, to handle investigations for the FBI in that Muslim country.