Dang, no more detailed news articles that I can find on this. Gotta know if it was a PTC holder or an “unlicensed” carry that they decided not to charge…
IMO, if the shooter was “unlicensed,” they would have stated so because it fits the narrative. I will be interested to see where this goes, if anywhere at all.
I suspect that if the shooter did not have a permit to carry (or came running out of a nearby house citing the civilian equivalent of “exigent circumstances”), he/she would have been arrested and the charging decision would have been left to the prosecutor. In either of those circumstances I doubt you will ever find any further updates in the press.
I don’t think would make it past the grand jury even if the prosecutor is as anti-american as the worst prosecutor and were to even entertain charging the person.