No, got it from Tako on Twitter and then directly from him.
My original thought (and one that seems to have been concluded by Bleeding Cool) is that the AI did it. It has convinced Harley she saw Booster do it, it convinced Booster he saw Harley do it and who knows what else. The logical conclusion it would seem for an Ai to make, to heal someone who is emotionally traumatized is to end the trauma by ending life perhaps. I'm saying no established character did it, which is why there's been no conclusive evidence...it was the Sanctuary Ai.
if it's the A.I. then the Trinity would have to give themselves up to the authorities as they would have inadvertently colluded with the killings.
Wasn't there a BleedingCool leak that claimed that it would look like Wally did it but it would turn out to be Hunter Zolomon, the guy who's whole schtick is "tragedy makes you a better hero"?
I would rather have this then it being his virtual twins and Linda screwing him over like this. If its true about Wally going to Suicide Squad, then do they realize how many fans both inside and outside of comic reading circles they will piss off.
AI being the baddie would explain the Trinity line, but I do not want Azzello writing Wally. He's a good writer, but Wally doesn't fit that book.