I'm not sure if it's that easy for the victim to find that information. My family was robbed several years ago and while the police eventually reported that they caught the perps, that was all of the detail they left. Similarly, my girlfriend had credit cards stolen once and neither the police nor the credit card company gave any information except that they had found the people who stole the card. Perhaps this discretion is to prevent people from attempting vigilante followup actions?
I'm almost certain that (in the States at least) that information would be public record. After all, the person has to be arraigned and go to trial. Police reports are almost always public information, even reports that don't involve you personally. You just have to go to the station sometimes.
The police aren't going to report to you every step of the way, (why would they?), but that does not mean you can't find that info out. You could even talk to the police officers involved, they would be happy to tell you, if they know.
