I just had my Ipod snatched from me, but Mobileme is not showing me the location of my Ipod touch?

I dont know what to do next. Ive sent messages to the Ipod to get it back and I have locked it, but I dont know what's next. Please Help|||Call the police, tell them your ipod was snatched so they can help you get it back safely. Try refreshing your browser to see if the location shows up. You should also try to contact the mobileme support on apple website to get help with finding it's location. Best of luck!