What if honestly, it's a generic crossbreed of different specices, and through it's differences, made it so the "monster", can't function properly, going on a rampage, and as the article said, the monster was supposevly "drowned", so it could probably be an Animal Cruelty crime, or an Murder. Whos knows? Scientists fuck shit up so badly, if that was an Experiment gone bad that escaped, and died by mistake, then F Scientist.
Keep your minds open guys, don't keep saying it's an turtle, because then there's no point to keep posting, because we want to talk about the turtle.