Utah Code § 77-23f-105

To obtain identifying information for an electronic device identified pursuant to a warrant concerning reverse-location information or reverse-keyword information obtained under Section 77-23f-102, 77-23f-102.2, 77-23f-103, or 77-23f-104, a law enforcement agency shall establish in the sworn warrant application probable cause to believe that the electronic device was used or otherwise implicated in a crime.