Prelude 9/11 morning Flight 11 hijacked Flight 175 hijacked WTC 1 hit Flight 77 hijacked WTC 2 hit Flight 93 hijacked Pentagon hit WTC 2 collapses Flight 93 crashes WTC 1 collapses WTC 7 collapses Epilogue

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

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.

 
A preliminary summary of the criminal investigation has been released, on January 11, 2002.

Financing

Travels

Chronology

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

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