That's what I was thinking. Reminds me of the Tom Clancy novel where the computer expert from the Army is abducted out of a parking lot. His attackers pull up to the guy as if to ask directions, nail him in the face with pepperspray and then pull him into the back seat.
One thing that interests me is that a report mentioned the police took an interest in two chairs in the guy's home beneath which a hole was torn in the floorboards. Was someone looking for something they somehow knew was hidden below or was someone trying to break out of the basement or did he just have some rotten flooboards in need of replacement or.....?
Looks like the investigators are looking at a possible stain on the floorboards like body fluid or chemicals... some kind of spillage, perhaps from mixing something over the sink.