I have a couple comments and questions:
First, in the US, as far as any of us know here, there has not been a confirmed albino or leusitic indigo snake anywhere.
This is the first I've heard of!
Second...did you see the snake in person and are you 100% sure it was an indigo snake?
Do you have any more photos? Any head closeups?
If you zoom in on that photo, it appears to have many tiny yellow speckles. Heavy speckling usually only occurs on "red face" eastern indigos. If it was leucistic, it would not have the yellow, and if it were albino (amelanistic) it should have screaming bright red on the sides of the face and under the chin.
It would seem if that were the case, someone would have taken a photo of the red areas because it would be spectacular. I've never seen lots of speckling on an eastern indigo that was not a "red" phase.
I'm curious as to why the speckles are yellow too...that just doesn't seem right. Baby eastern indigos have sky-blue or white speckling. I wouldn't think it would be yellow on an amelanistic snake. The shape of the snake looks right for Drymarchon...but...if you have not personally seen the albino indigos, I'd be concerend it was a fraud and maybe this is a baby amelanistic cobra of some sort?
I'm not accusing you of deceipt, just wondering if it's possible that you were a victim of it yourself...