A bird I lived with once lost her purse which contained a smallish stash of resin.....a good citizen handed it into the police...who then phoned us up to say it had been handed in and would she come and collect it......this of course provoked horrible discussions about the wisdom of this course of action, with dire consequences on careers etc.
Anyway, after deciding OB would have probably just have nicked the stash, it was collected and still in there.......not all coppers are bastards.
Same thing happened to a friend of mine when we were kids, except the nice coppers came around his house and nicked him instead. He merely told them that it wasn't there when he lost it, and that was the end of it. Thinking about he was quite bright for a geordie really....