Scary experience

So last night Brett got home and asked me why there was a lawn chair in the middle of our driveway? I had no clue what he was talking about and didn't think anything of it. Until I wake up for school and I was taking my dog out when I noticed that there was a huge log underneath my car... It was pretty scary because the only way it could of gotten under my car was if someone put it there? It was from our neighbors house but he wasn't home last night, he was out of town. Brett was pretty creeped out. He thought someone was trying to either break into the house, or look at me through a window or something. Then when I got home from work there were cop cars two houses down from us. My next door neighbor came home and I told him about the situation and asked what was going now down there. I still don't know exactly why the police were there. But we are both pretty nervous about going outside at night now... Hopefully we'll figure out soon what's going on...