Minnesota Proof of Service — Criminal Expungement is a legal process to clear a criminal record in the state of Minnesota. This process involves filing a petition with the court to have certain criminal records removed permanently from the public record. The petition must include a valid proof of service, which serves as evidence that the criminal defendant has been notified of the petition and given an opportunity to respond. There are two types of Minnesota Proof of Service — Criminal Expungement: personal service and service by mail. Personal service requires the petitioner to personally serve the criminal defendant with the petition and any other documents associated with the expungement. Service by mail involves mailing the documents to the criminal defendant, with proof of delivery.