Looks like it, according to the Miami Herald. Excerpt:

Freshly released but heavily censored FBI documents include tantalizing new information about events connected to the Sarasota Saudis who moved suddenly out of their home about two weeks before the 9/11 terrorist attacks, leaving behind clothing, jewelry and cars. The documents were released to BrowardBulldog.org Monday amid ongoing Freedom of Information Act litigation. The news organization sued in 2012 after being denied access to the FBI’s file on a once-secret investigation focusing on Abdulaziz al-Hijji, his wife, Anoud, and her father, Esam Ghazzawi, an advisor to a Saudi prince. An FBI letter accompanying the documents, the fourth batch to be released since the lawsuit was filed, cites national security and other reasons to justify why certain information was withheld. The letter does not explain why the documents were not previously acknowledged to exist.

The story says the previously secret FBI documents link the Saudi residents to the 9/11 hijackers. More:

In all, the FBI released 11 pages Monday. They contain statements reiterating that the al-Hijjis had departed the United States in haste shortly before 9/11 and that “further investigation” had “revealed many connections” between them and persons associated with “attacks on 9/11/2001.”

Former Florida Sen. Bob Graham, who co-chaired the 9/11 Commission, tells the newspaper that the FBI never told the committee about these documents.

There needs to be a Congressional investigation.