Sounds like a bust and grab, although I wouldnt rule out that it may have been planned. I guess all you can do is make sure the police have all the information they need and wait.
If I may suggest, if you live in an apartment throw out a few print outs and knock on a few doors asking if anyone may have noticed anything odd through out the day, loud noises etc. Aside from that, keep your fingers crossed.
"Its only a little bit on fire"