Does Utah Rule 505 require balancing multiple factors when determining confidential informant privilege? Nielsen v. State Explained

In Nielsen v. State, 2016 UT 52, the Utah Supreme Court clarified the proper analysis for determining when the confidential informant privilege under Rule 505 of the Utah Rules of Evidence requires dismissal of criminal charges. The decision resolved confusion about whether courts should apply a multi-factor balancing test or focus solely on the rule’s plain language.

Background and Facts

A confidential informant told police that M.G. was selling ecstasy and planned to attend a rave with friends. Based on this tip, officers stopped a vehicle driven by M.G. with Kyler Nielsen as a passenger. The search revealed ecstasy pills throughout the vehicle, including in Nielsen’s backpack. Nielsen claimed the drugs belonged to M.G. When the State charged Nielsen with possession of a controlled substance, he moved to compel disclosure of the informant’s identity. The State invoked the informant privilege under Rule 505.

Key Legal Issues

The central issue was whether Rule 505 requires courts to apply a three-factor balancing test from prior case law considering (1) the defendant’s need for disclosure, (2) potential safety hazards, and (3) the public interest in preserving informant flow, or whether the rule’s plain language requires only determining if the informant can provide testimony necessary to a fair determination of guilt or innocence.

Court’s Analysis and Holding

The Utah Supreme Court held that Rule 505’s plain language controls and rejected the multi-factor balancing approach. The court explained that Rule 505 places only one condition on the State’s informant privilege: “the absence of a reasonable probability that the confidential informant can give testimony essential to a determination of the defendant’s guilt or innocence.” The court distinguished earlier decisions that had applied balancing tests under different rule versions, noting that Rule 505 “once again tracks Roviaro, not Forshee‘s multi-factor gloss.”

Practice Implications

This decision provides clarity for practitioners handling informant privilege issues. Defense attorneys should focus arguments exclusively on whether the informant possesses knowledge necessary for a fair determination of guilt or innocence, rather than attempting to balance policy considerations. The ruling emphasizes that Rule 505’s mandatory dismissal requirement applies when the necessity standard is met, regardless of safety concerns or public interest in maintaining informant relationships.