LOL
I do like the Lemming's approach, it has a certain dircetness one can savour.
So how do we squash the Bat with a giant penny?
I have just envisioned it, picture this if you will...
Our insitgator is someone who can enlarge items (turning a simple small penny into a 20' diameter Disk of Squishing.
Commite a minor crime to get the Bat's attention (preferably in a large open area). Wait for the Bat to eventually arrive. The Bat will normaly talk to you first, especially if you dont act violent-like (so don't act violent-like, if you can take the disadvante of pacefist do so). The Bats will probably ask for your surrender. You then respond by saying, that you can't quite make up your mind whether to go quietly or to put up some form of a struggle, but if the bat would be willing to toss a coin for you it would speed things up. The Bat is probably now very dubious (being a person of a suspicious mind), but before he does anything flip your penny over to the Bat, and say, heads I go queitly into the night, Tails you beat me up before I go quietly into the night. And generally encourage the bat to toss the coin up into the air. When he does, because you did ask him so nicley, you enlarge the little penny into the Disk of Squishing on its way down, and with your free hand you dive for cover.
Result one squished Bat. Return peny to normal size to leave coroner with a real conundrum. And walk away, with your hands in your pockets, whistling a little old ditty, you didn't see a thing.
(sigh)
Nice one Lemming.