Utah Arrest Law

77-36-2.2.  Powers and duties of law enforcement officers to arrest — Reports of domestic violence cases — Reports of parties’ marital status.

(2) (a) In addition to the arrest powers described in Section 77-7-2, when a peace officer responds to a domestic violence call and has probable cause to believe that an act of domestic violence has been committed, the peace officer shall arrest without a warrant or shall issue a citation to any person that the peace officer has probable cause to believe has committed an act of domestic violence.