Find iPod Touch Owner?

I work at a school and a student recently got busted with a stolen (she admited it) iPod Touch. I was looking at it trying to help the School Resource Officer locate the owner since she refuses to say where or who she stole it from. It seems to have been cleared (not registered to an iTunes account, no other identifying info on it), but when I search the serial number at apple.com it comes up as registered, but that's all it tells me. Is there a chance that a call to Apple could reveal who it is registered to? Would it be better to have the SRO call, or does Apple not reveal any information like that? Is there a particular number or department I should speak to?