Wyo. Stat. § 37-12-107: Unlawful riding on railroad trains; prosecution of offender.

Any sheriff or deputy sheriff receiving any person from any special constable, as in this act provided, shall forthwith deliver the person, with the charge made against him to the sheriff of the county wherein the offense may be charged to have been committed. It shall be the duty of the sheriff receiving the prisoner forthwith to deliver to the district attorney for the county, the written charge made against the prisoner by the special constable, and the district attorney shall file with the proper circuit court the proper affidavit charging the prisoner with the offense, and shall diligently prosecute the same.