Anthrax Case Cracked

So they think they've got the right evil scientist in the anthrax case this time. Except before they could arrest him, he killed himself. With a drug overdose. No death-by-anthrax lung agony for him!

But what was his motive? Some think he was running an open-air experiment. He had felt constrained by limitations on his research:

Ivins conducted numerous anthrax studies, including one that complained about the limited supply of monkeys available for testing. The study also said animal testing couldn't accurately show how humans would respond to anthrax treatment.

Why were the investigators aimed
at the wrong guy all that time?

Maybe the real guy framed
him with evidence from the crime.