Prosecutors had also drawn attention to web searches for “chest injuries” and “neck breaking,” claiming that they spoke to Casey's homicidal intentions and state of mind.
See. To me, that's a huge leap.
Fwiw, I've heard the jury was 10-2 against 1st degree murder and 8-4 against manslaughter. And what would they know? They only sat there and listened to every second of testimony.