Called Off the Trail? FBI Agents Probing Terror Links Say They Were Told, ‘Let Sleeping Dogs Lie’ By Brian Ross and Vic Walter Dec. 19 — 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. 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. "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," Wright said. "You can't know the things I know and not go public." 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." The FBI says its handling of the matter was appropriate at the time. "Truthfully, if 9/11 had not occurred, we wouldn't be here [giving the interview]," said Vincent, a 27-year veteran at the bureau until he retired a few days after being interviewed by ABCNEWS. "Because of 9/11, we're here because we see the danger."