Anthrax Suspect Didn't Act Alone, Leahy Posits Senate Judiciary Committee Chairman Patrick J. Leahy (D-Vt.) yesterday broke a years-long public silence about the anthrax-mailing case to cast doubt on the FBI's assertion that a bioweapons researcher acted as the lone culprit in the deadly attacks. Leahy, one of two congressional addressees of poison-laced letters in the fall of 2001, did not offer reasons for his suspicions, which could heighten calls for an independent review of the evidence that authorities gathered against Bruce E. Ivins. "If he is the one who sent the letter, I do not believe in any way, shape or manner that he is the only person involved in this attack on Congress and the American people," Leahy told FBI Director Robert S. Mueller III at a hearing yesterday. "I believe there are others involved, either as accessories before or accessories after the fact. I believe that there are others who can be charged with murder."....