The White House may declassify still-secret sections of an official inquiry into the 9/11 terrorist attacks which refer to possible Saudi Arabian support.
Questions over the 28-page section of the congressional report have been raised this week following the deposition of imprisoned former al-Qaeda operative Zacarias Moussaoui in which he claimed major Saudi figures were donors to his group in late 1990s.
Saudi officials have denied this.
In pictures: 9/11 Memorial Museum
In pictures: 9/11 Memorial Museum
1/10 Pavilion exterior
The long-awaited museum dedicated to the 3,000 victims of the September 11 terrorist attacks in New York, will open to the public at the World Trade Center site on May 21
2/10 Pavilion exterior
A view of the pavilion from outside
3/10 WTC Tridents
Recovered from the World Trade Center Site after 11 September 2001, these structural steel 'tridents' rose from the base of the North Tower (1 WTC). These columns were embedded at bedrock, branching from one column into three at the sixth floor. Here, they are located in the museum’s entry pavilion designed by Snoetta
4/10 Rescue and recovery
Photographs of rescue and recovery are part of the the exhibition
5/10 FDNY ambulance
FDNY ambulances were dispatched to the World Trade Center after hijacked Flight 175 struck the South Tower
6/10 Damaged phone booth
Damaged phone booth recovered after the 9/11 attacks is part of the exhibition
7/10 Bike rack
Bike rack recovered from outside of WTC building
8/10 Flag steel
The 'flag steel' is a piece of recovered WTC steel. Its graceful s-curve makes it appear as if it is a ribbon, or flag, flowing in the wind
Operating engineers used grappler claws to lift tangled steel and debris from the pile at Ground Zero. Spotters worked alongside them, scrutinizing each load for human remains. Breeze Demolition was among the companies utilizing heavy construction equipment for the recovery and cleanup operations
10/10 Box Columns
On 9/11, hijacked Flight 11 tore into the north facade of the North Tower, creating a gash from the 93rd through the 99th floors and tearing apart steel (M-27) columns weighing many tons
According to White House spokesman Josh Earnest, US intelligence last year began reevaluating the decision to classify the section following a request from congress, though no timescale for the decision was given.
Earnest said: "The United States and Saudi Arabia maintain a strong counterterrorism relationship as a key element of our broad and strategic partnership."
Moussaoui said a list of al-Qaeda donors that he drafted during Osama bin Laden's time at the helm included "extremely famous" Saudi officials such as Prince Turki al-Faisal Al Saud, a former Saudi intelligence chief.
US officials familiar with the classified section of the report, in which the involvement of Saudi families in financing terrorism is examined, are torn as to whether it should be made public.
Some have argued that it should remain secret because it includes material that had not been investigated enough, but others, speaking to Reuters on the condition of anonymity, have said there was no good reason not to have it released.
People familiar with the report said most of the material that remained classified originated with the FBI.
Philip Zelikow, former executive director of the 9/11 Commission, a separate U.S. government inquiry into the attacks, said it was appropriate that the material was classified and there may still be reason to withhold it.
"None of the people involved had been interviewed and many relevant documents had not yet been reviewed," Zelikow said.Reuse content