Arrest reports are not freely available through standard public inmate search tools. They are law enforcement documents rather than court records, and accessing them requires going through the right channels.
The most direct route is to contact the arresting agency, whether that is the county sheriff's office, local police department, or state patrol, and request a copy of the arrest report through their records division. Wyoming law enforcement agencies process public records requests under the Wyoming Public Records Act. You may need to submit a written request, provide your family member's full name and approximate arrest date, and pay a small copying fee. Processing time varies by agency.
If charges have been filed, the clerk of the court in the county where the arrest occurred will have the case file once it enters the court system. That is another source for documentation once the case is formally docketed.
For a faster starting point, TruthFinder's arrest records search pulls from databases that aggregate law enforcement records across the country and can surface recent arrest information that has not yet made it into standard court systems. InmateAid provides access to that service, and it can help you confirm what charges were filed and in which jurisdiction before you pursue the formal records request. You can click here to see if it helps.