http://georgewashington2.blogspot.com/2008/08/anthrax-letters-not-in-ivins.html

The FBI cannot match Ivins and the handwriting in the anthrax letters. As summarized by World Net Daily:

"Casting further doubt on the FBI's anthrax case, accused government scientist Bruce Ivins passed two polygraph tests and a handwriting analysis comparing samples of his handwriting to writing contained in the anthrax letters, U.S. officials familiar with the investigation say. *** Officials confirm that FBI handwriting analysts were unable to conclusively match samples of Ivins' handwriting with the writing on the anthrax envelopes and letters".

The WND article points out other problems with the FBI's case:

Investigators also failed to uncover other critical evidence linking Ivins directly to the letters. For instance: * No textile fibers were found in his office, residence or vehicles matching fibers found on the scotch tape used to seal the envelopes; * No pens were found matching the ink used to address the envelopes; * Samples of his hair failed to match hair follicles found inside the Princeton, N.J., mailbox used to mail the letters. Also, no souvenirs of the crime, such as newspaper clippings, were found in his possession as commonly seen in serial murder cases. What's more, the FBI could not place Ivins at the crime scene with evidence, such as gas station or other receipts, at the time the letters were mailed in September and October 2001. *** lab records reviewed by WND show the number of late nights Ivins put in at the lab first spiked in August 2001, weeks before the 9/11 attacks."

So much for an air-tight case.

Hat tip to Galileo.