Government spokeswoman Yusill Scribner said she had no immediate comment on the lawsuits.
FBI spokesman Richard Kolko said the agency had not reviewed the lawsuit against it and would not comment on pending litigation.
A victims' compensation fund established by Congress has paid $6 billion (€4.35 billion) to 2,880 families of those who died in the attacks and more than $1 billion (€720 million) to 2,680 injured victims.
But 41 cases filed on behalf of 42 victims remain pending in federal court in Manhattan because some victims decided to pursue the usual court route rather than accept payouts from the September 11th Victim Compensation Fund of 2001.
The first trials to assess damages are scheduled to begin in September.
Airlines prep for lawsuits, want CIA and FBI to give information
Zacarias Moussaoui pleaded guilty Friday to conspiring with the hijackers in the Sept. 11 plot and declared Osama bin Laden personally instructed him to fly an airliner into the White House.
Instructor testified that instructors at the school breathed "a collective sigh of relief" when Atta and al-Shehhi completed their training and left the school
Luggage that didn't get put on hijacked jet provided information about terrorists, say former investigators.