FBI (police)

On the day of the terror attack, on September 11, 2001, the FBI, the federal police, instigated what would become the largest criminal investigation in history of the bureau. The criminal investigation assigned 7,000 of its then 11,000 agents on the case, named PENTTBOM (“Pentagon/Twin Towers Bombing Investigation”).
The criminal investigation revealed the identity of the 19 hijackers, and uncovered how the terrorists had planned and carried out the attack. As is customary with police investigations, the full body of material has not been released to the public. Press Release of September 27, 2001 with photographs of the 19 hijackers American Airlines #11 American Airlines #77 United Airlines #93 United Airlines #175 Zacarias Moussaoui, known as the “20th hijacker”, declared himself guilty on six counts against him, in connection with his involvement in the terror attack on September 11, 2001. In May, 2006, he received a life sentence. Director Mueller’s Statement on the Indictment on December 11, 2001 Indictment
A preliminary summary of the criminal investigation has been released, on January 11, 2002.
Financing FBI summary, on the financing of the hijackers Prinouts of the bank accounts of the hijackers Summary of the bank accounts of the hijackers Travels Account of the personal data of the hijackers, and where and how they were granted visas for entering the U.S. Overview of the hijackers’ travel activities in the U.S. Chronology Activity of the hijackers in Florida Activity of the hijackers in the days before the attack Follow-up The FBI: Protecting the Homeland in the 21st Century Report of the Congressionally directed 9/11 Review Commission Marts 2015 Summary (p. 101) Based on the available information obtained and considered, the Review Commission concludes that there is no new information to date that would alter the original findings of the 9/11 Commission regarding the individuals responsible for the 9/11 attacks or for supporting those responsible for the attacks. There is new evidence, however, that confirms and strengthens the cases against previously known co-conspirators who are awaiting trial. The Review Commission also concludes that media reports regarding a possible FBI source with access to UBL in the early 1990s or suspicions regarding a Saudi family resident in Sarasota before the 9/11 attacks did not hold up under scrutiny. The Review Commission commends the FBI for continuing its active investigation into the 9/11 attacks. Along with the release, one of the authors, Dr. Bruce Hoffman, was interviewed: Interview: Dr. Bruce Hoffman on the Release of the 9/11 Review Commission Report Georgetown Security Studies Review Misc FBI interviews, about the hijackers and possible sightings of them FBI interviews, security personnel at the airports, security procedures, and surveillance videos of the hijackers Receipts for the knives used during the hijackings Briefing about the hijackers’ pilot training, and examples of pilots with similar names, who was unjustly accused Detailed information about the hijackers’ identification papers, including documents found on the crash sites Detailed information about the hijackers, flight manifestos, FBI reports, and lists of evidence collected at the hijackers’ hotel rooms and the crash sites Description of the hijackers’ network, Center for Strategic and International Studies (CSIS) Description of the hijackers’ network, by Jeff Jonas Description of how the hijackers were identified from their DNA, Newsweek Report from the Armed Forces DNA Identification Laboratory, including information about DNA samples from the hijackers on oard Flight 93 and Flight 77 Report from the U.S. aviation authorities, about the medical records of the hijackers Summary of the hijackers’ activities in Las Vegas Pages Video material