What should be my next step?

My boyfriend is currently serving a sentence and I noticed that all of a sudden there was a new charge for a different county. The only information available at this time is what the charge is and the bond amount; the charge is uttering a forged check/petit theft. He wasn’t even aware of this new charge until I mentioned it to him. We were thinking maybe his identity was stolen if it happened recently, there is no date stating when the crime was committed. He has done jobs for people who paid him in the form of a check but that was 2-3 years ago, is it possible for it to now be investigated and charged? Also, if he wasn’t aware of a check being bad, wouldn’t he be a victim of the crime? I’m just not sure where to start since I’m not able to get any other information about the charge until he is in that county’s custody.