From the June 2006 Idaho Observer:

Bin Laden not suspect in 9/11 attack says FBI

Within hours of the Sept. 11 attacks, the Bush administration publicly identified Saudi national Osama bin Laden as masterminding the attacks. The Bush administration’s official public position has never changed. But bin Laden has never been formally charged with crimes associated with 9/11. Though the alleged al Qaeda leader stands charged as a suspect in numerous acts of terror since 1998, FBI Chief of Investigative Publicity Rex Tomb told Muckraker Report editor Ed Hass. "...the FBI has no hard evidence connecting Bin Laden to 9/11."

Sheridan was tipped off when he noticed that Bin Laden’s "Most Wanted" poster made no reference to 9/11. According to Tomb, "The FBI gathers evidence. Once evidence is gathered, it is turned over to the Department of Justice. The Department of Justice then decides whether it has enough evidence to present to a federal grand jury. In the case of the 1998 United States Embassies being bombed, Bin Laden has been formally indicted and charged by a grand jury. He has not been formally indicted and charged in connection with 9/11 because the FBI has no hard evidence connecting Bin Laden to 9/11." (emphasis added)