In 4-Year Anthrax Hunt, F.B.I. Finds Itself Stymied, and Sued - New York Times

In 4-Year Anthrax Hunt, F.B.I. Finds Itself Stymied, and Sued - New York Times:

"Four years after an unknown bioterrorist dropped letters containing a couple of teaspoons of powder in a mailbox in Princeton, N.J., what began as the largest criminal investigation in American history appears to be stalled, say scientists and former law enforcement officials who have spoken with investigators.

The failure to solve the case that the authorities call 'Amerithrax' is a grave disappointment for the Federal Bureau of Investigation and the Postal Inspection Service, the investigative arm of the Postal Service. The letters were the first major bioterrorist attack in American history and killed five people, sickened 17 others, temporarily crippled mail service and forced the evacuation of federal buildings, including Senate offices and the Supreme Court.

'They've done everything they can possibly think of doing, and they're just not there yet,' said Randall S. Murch of Virginia Tech, a former scientist at the bureau who led the use of laboratory tests to trace the origin of microbes used in crimes. 'You have to understand that the pressure is enormous.'

A former law enforcement official who keeps up with several investigators said, 'From the people I've talked to, it's going nowhere.' The official, who spoke on condition of anonymity because of sensitivity over leaks in the case, said some agents still formally assigned to the investigation were mostly working on other cases, because 'there's nothing for them to do.'
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The two sets of anthrax-laced letters, addressed to news media organizations and Senators Tom Daschle of South Dakota and Patrick J. Leahy of Vermont, both Democrats, were postmarked Sept. 18 and Oct. 9, 2001."