Wyo. Stat. § 7-13-702: Escape.

An inmate is deemed guilty of escape from official detention and shall be punished as provided by W.S. 6-5-206(a)(i) if, without proper authorization, he fails to remain within the extended limits of his confinement, the location he has been furloughed to, or fails or neglects to return within the time prescribed or when ordered to do so to the institution from which he received a furlough pursuant to W.S. 7-13-701.