Montana Title 46. Criminal Procedure § 46-18-1110. Expungement orders

(a) the order must direct, for each offense being expunged, the arresting law enforcement agency, the prosecutor's office that prosecuted the offense, and the clerk of the court in which the person was sentenced to permanently seal all records of the arrest, investigation, and detention, if any, and any court proceedings that may have been held in the case in the possession of the recipient of the order within existing resources; and

(b) the person whose records are to be expunged shall send, for each offense being expunged, a copy of the order to the arresting law enforcement agency, the prosecutor's office that prosecuted the offense, the clerk of the court in which the person was sentenced, and the department of justice, along with the fingerprints taken pursuant to 46-18-1104 for validating identity and a form prepared by the department of justice that contains identifying information about the petitioner.