They showed footage of him the first day, what looked like outside his house, and it really looked like he was overselling his shock. I can’t imagine what I’d feel immediately after learning my own brother had done something like this, so I’m not saying he looked guilty, but more that whatever he was feeling, I got the impression he was trying to show what he imagined people would expect him to feel.
I had that same feeling. He was overacting.
Arrest the family. They know more, whether he converted to Islan, or his girlfriend was blackmailed by Filipino ISIS, or he just wanted to kill for pleasure. He could have been even setup by others to be the fall guy. Middle aged, rich, and white. Perfect patsy.