This is finally starting to answer what has as yet not been answered:
The AP has some more information up.
And then there's this:
|8/7/2008, 6:37 a.m. CDT
By MARK SHERMAN
The Associated Press
WASHINGTON (AP) — Lacking hard proof, federal prosecutors relied on the process
of elimination and circumstantial evidence to finger Bruce
Ivins as the anthrax killer.
Their case might be compelling, but it is not airtight.
Obviously, I'm not the only one left wondering this morning….