Bin laden was stripped from his Saudi nationality , his family disowned him , and his followers chased.

The Biden administration has declassified a 16-page FBI report tying 9/11 hijackers to Saudi nationals living in the United States. The document, written in 2016, summarized an FBI investigation into those ties called Operation ENCORE.

The partially redacted report shows a closer relationship than had been previously known between two Saudis in particular — including one with diplomatic status — and some of the hijackers. Families of the 9/11 victims have long sought after the report, which painted a starkly different portrait than the one described by the 9/11 Commission Report in 2004.

While the commission was largely unable to tie the Saudi men to the hijackers, the FBI document describes multiple connections and phone calls.

Years ago, the commission wrote that when it came to the Saudi diplomat Fahad al-Thumairy, "We have not found evidence that Thumairy provided assistance to the two hijackers." A decade later, it appears FBI agents came to a different conclusion. The report says Thumairy "tasked" an associate to help the hijackers when they arrived in Los Angeles and told the associate the hijackers were "two very significant people" more than a year before the attacks.

A newly declassified and heavily redacted FBI memo from 2017 stated, "In the late 1990s and up to September 11, 2001, Omar al-Bayoumi was paid a monthly stipend as a cooptee of the Saudi General Intelligence Presidency (GIP) via then Ambassador Prince Bandar bin Sultan…."

The memo continued, "Allegations of al-Bayoumi's involvement with Saudi Intelligence were not confirmed at the time of the 9/11 Commission Report. The above information confirms these allegations."

Another recently declassified FBI memo from the same year, citing source reporting, said, "There is a 50/50 chance Omar al-Bayoumi had advanced knowledge the 9/11 terrorist attacks were to occur."

The declassified records pertain to a long-secret investigation, code named "Operation Encore," which centered on the two hijackers who lived in San Diego and who may have assisted them.