May I suggest that someone has a word with a few of the local low lifes, maybe offer a a few quid or a selection of illicit substances as an incentive for information leading to a good kicking, followed by a swift phone call to the local plod to come and collect said low life?
I had over £3000's grands worth of fishing tackle stolen from my garage...a word here and there resulted in a piece of paper with a name and address popping through my letterbox. We won't go any further with the retributions and what happened, but it worked for me...so it may work in the this case?