As you had Find My iPad enabled on it try locating it either via http://www.icloud.com on a computer or Find My iPhone app on another iOS device - but that will only work if it's connected to a network and the device hasn't already been wiped and/or Find My iPad disabled on it.
You've reported it to the police ? You should also change your iTunes account password, your email account passwords, and any passwords that you'd stored on websites/emails/notes etc.
As we are fellow users here on these user-to-user forums, you're not talking to iTunes Support nor Apple - I've asked the hosts to remove your email address, phone number and serial number from your post (it's not a good idea to post personal info on any public forum).