Wyo. Stat. § 7-3-203: General requirements as to demand by another state.

No demand for the extradition of a person charged with crime in another state shall be recognized by the governor unless in writing and accompanied by a copy of an indictment found or by an information supported by affidavit in the state having jurisdiction of the crime, or by a copy of an affidavit made before a magistrate there, together with a copy of any warrant which was issued thereon. The indictment, information, or affidavit made before the magistrate shall substantially charge the person demanded with having committed a crime under the law of that state and the copy shall be authenticated by the executive authority making the demand, which shall be prima facie evidence of its truth.