In September, news about a previously unknown FBI investigation into possible ties between 9/11 hijackers and a Saudi family living near Sarasota led the agency to deny there was any connection and assert that it made all of its files available to congressional investigators a decade ago. But two months later, the FBI has been unable or unwilling to substantiate that it disclosed any information regarding its Sarasota investigation to Congress, says former Florida U.S. Sen. Bob Graham. He has long contended the FBI stonewalled Congress about what it knows about possible Saudi support for the 9/11 hijackers. The FBI investigation began shortly after 9/11 when residents of the gated community of Prestancia, south of Sarasota, called to report the abrupt departure from their luxury home of a Saudi family about two weeks before [9/11]. The most important information came when the FBI examined gatehouse security logs and photographs of license plates, according to then-homeowner's association administrator Larry Berberich and a counterterrorism agent involved in the investigation. They said the security records revealed that the home was visited by vehicles used by 9/11 terrorist leader Mohamed Atta and fellow hijacker-pilot Ziad Jarrah.