I couldn't remember for sure so I looked it up; he did die, but of natural causes...after suing the crap out of Atlanta, the Feds, and CNN, most or all of whom settled out of court. I'm not positive, but I think the research scientist who became the target in the anthrax investigation may have killed himself, though...they were a lot less free with his real name, though I'm sure everyone who worked with him knew exactly whom the finger was pointing at which would have made him totally unemployable professionally.
Yes. The poor researcher did kill himself. The Feds had found some personal sexual obsession of his. Had nothing to do with the case. The first researcher got himself an attorney, fought, and got a settlement. The sad part is that after the second researcher killed himself, they eventually found out it wasn't the anthrax from his flask after all. Of course, they stopped looking after that. The Feds just needed a way to end the questioning of the public, and as long as the poor guy was dead, they could imply guilt.
I remembered that Jewell died, but I thought he did himself in too. Glad to hear he didn't. What they did to that poor guy was unforgivable.