Generally speaking, you are detained when the police stop you – on foot or in your car – to question you about the potential of a crime having been committed. A magistrate shall issue a temporary pretrial status order under Subsection (1) that detains an individual if the individual is arrested for a felony offense.These rules shall govern the procedure in all criminal cases in the courts of this state except juvenile court cases. We explain the arrest process and how to detect if the police have stepped over the line. Contact us to learn more about your arrest. "Automatic expungement" means the expungement of records of an investigation, arrest, detention, or conviction of an offense without the filing of a petition. Utah Criminal Code § 76-9-1003. Detention or arrest--Determination of immigration status. In all circumstances in which a private person is claiming to have made an arrest, the individual must complete and sign a witness statement form. You drive to Wyoming, pull over for about a half an hour and meticulously plan how to make the arrest.