If you are asking this because you are the victim of crime you need to file a police report. A police officer will take your statement and then someone should take the case to the District Attorney. At the District Attorney's Office an Assistant District Attorney will evaluate the case. If there is probable cause the ADA will file a case in County Court. A warrant will be issued for the person's arrest, and they will go from there.
This is a simplified answer. At every stage of the process one of these public servants can decide the case is not worth their time, or there is not enough evidence to move forward. The police will certainly want to know how you know who stole from you, you also want to be clear that you know who did it. The police are used to people reporting stolen property for insurance purposes make it clear that is not what you are doing. If you are worried about being accused of a crime, call me I would be glad to help you out.Ask a similar question