I absolutely believe they have processed DNA, I'm just hesitant to believe for certain that any of its is linked directly to the victims bodies and is actually BG's
They very well may have BG's DNA that they have confirmed through lab testing, But I'm not entirely convinced that they do
I believe that what some may see as a slip up early on may have been a simple case of Investigators knowing that they had DNA, But Lab testing had yet to determine who was the source of said DNA.
It would not totally surprise me to learn that the DNA that they have processed was not that of BG's
Like I said I'm hopeful that they do infact have BG's DNA but I can certainly envision a scenario where they thought they did and after testing it ended up being from an individual that was proven not involved and had left a cigarette days before the crime or what have you
I would still expect that they would continue taking Buccal swabs to possibly compare in the future if that was the case
But as far as ppl on SM claiming that someone has been cleared bc of DNA, Honestly I put no value in any of that
Like I said before I'm hopeful, But I wouldn't bet the farm on it
Theoretically, there is a way to clear someone of the suspicion, but probably, not rule the suspect in. And I hope that they do have at least this...
Think of a hair shaft without a viable follicle. Someone is balding, or simply shedding hair because of stress. One can get mitochondrial DNA from it.
Mitochondrial DNA is a tricky thing. It is not nuclear DNA. It is different, its own. It could be very rare, or common. A rare is very interesting.
A regular "H" mitogroup, for example, won't tell much. Except for European ancestry.
However, even in the "regular" one, there might be private mutations that can make it very rare, although, still an H.
So if LEs have the material with rare mitogroup, then the whole maternal line of the suspect needs to be checked, who else might have it, how high is the chance of the person living in Delphi, being a male, etc, etc. However, don't expect a "DNA match".
Now, if the rare hair matches the suspect, and the suspect had nothing to do near the killing place on 2/13, this might be interesting.
(I hope it was not a cigarette. First, not sure that the perp is smoking, second, such unexpected "gifts", most likely, are placed specially. He chose the girls, the place, he did it fast as fast could be, and he dropped a cigarette? No way).
People can drop a lot of things that can be of interest, however. They don't necessarily need to leave "touch" DNA that is difficult to prove, or cigarettes near the bodies.