Right, I agree it’s weird. Maybe he thought they’d bring things there. Maybe he’s just strange. Some articles report he had mental health issues (which adds a whole other layer to everything about the case). As for not reporting it, that could be for any reason. If he didn’t take anything they could just be like whatever, we’ll keep an eye on it, not worth calling the cops out. Personally, my neighbor’s house is in a state that’s very similar to the construction site here. It’s a fully formed house but they’ve gutted the inside to flip and sell it. Two weeks ago someone was inside that shouldn’t be there. Their side door didn’t latch all the way and this person was poking around. I told them to leave or I would call the cops, and not come back. They left, so I didn’t bother calling the police because it was over and done with, but I keep an extra close eye on the house now.