They don't really look like they've been touched at all so that makes sense.

I don't have an answer for either of those... unless maybe they wanted us to find it for some reason. [Poland doesn't like that answer though. It invalidates everything he found and he can't have that.]

If someone walked in on them they might have just shoved it in there quick so no one else saw them with it when they escaped from the room? I mean the clock going off when only Yuzu and I found Rin really is weird.