ABCNEWS.com : FBI Called off Terror Investigations

Two veteran FBI investigators say they were ordered to stop investigations into a suspected terror cell linked to Osama bin Laden's al Qaeda network and the Sept. 11 attacks.

"September the 11th is a direct result of the incompetence of the FBI's International Terrorism Unit. No doubt about that. Absolutely no doubt about that," [FBI agent} Wright said. "You can't know the things I know and not go public."

In a dramatic interview with ABCNEWS, FBI special agents and partners Robert Wright and John Vincent say they were called off criminal investigations of suspected terrorists tied to the deadly bombings of two U.S. embassies in Africa. U.S. officials say al Qaeda was responsible for the embassy attacks and the Sept. 11, 2001, attacks in the United States.

In the mid-1990s, with growing terrorism in the Middle East, the two Chicago-based agents were assigned to track a connection to Chicago, a suspected terrorist cell that would later lead them to a link with Osama bin Laden. Wright says that when he pressed for authorization to open a criminal investigation into the money trail, his supervisor stopped him.

"Do you know what his response was? 'I think it's just better to let sleeping dogs lie,'" said Wright. "Those dogs weren't sleeping. They were training. They were getting ready."

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."

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.

On Sept. 11, 2001, the two agents watched the terror attacks in horror, worried that men they could have stopped years earlier may have been involved.

The White House confirmed their fears. One month after the attacks, the U.S. government officially identified al-Kadi — the same man the FBI had ordered Wright and Vincent to leave alone years earlier — as one of bin Laden's important financiers.