FBI agents in Minnesota become convinced that Zacarias Moussaoui plans to hijack a plane, but are unable to convince HQ, which blocks their warrant application.
As the Radical Fundamentalist Unit (RFU) at FBI headquarters has already blocked an application for a criminal warrant (see August 21, 2001), the FBI’s Minneapolis field office must apply for one under the Foreign Intelligence Surveillance Act (FISA). Minneapolis agent Harry Samit completes an application for a warrant to search Moussaoui’s belongings on August 25. To obtain the warrant, he has to show there is probable cause to believe Moussaoui is an agent of a foreign power. The memo states that Moussaoui recruited a fighter for a particular Chechen rebel group connected to al-Qaeda, so he is connected to al-Qaeda through the Chechens. However, the RFU at FBI headquarters believes that the Chechen rebels should not be described as a foreign power and that the link between the Chechens and bin Laden is not strong enough