State v. Updegraff, 267 P.3d 28

Background

Jefferson County reserve deputy Janik encountered Updegraff parked at Cardwell Bridge Fishing Access, a posted day-use area in Madison County, late at night and observed signs of intoxication.
Janik announced she was a deputy, obtained information, and requested Updegraff exit the vehicle; Wharton arrived, detected odor of alcohol, and Updegraff refused a breath test after being read implied-consent advisory.
Janik searched the car and collected evidence; Wharton handcuffed Updegraff and transported him to a Jefferson County facility for processing and testing after he refused the test.
Arrest occurred in Madison County by out-of-jurisdiction Jefferson County officers, who argued under the private person arrest statute and exigent circumstances; Madison County authorities were not immediately notified.
District Court denied the suppression/dismissal motion; jury convicted Updegraff of DUI and related offenses; On appeal, the central question was whether the arrest was legal given out-of-jurisdiction peace officers acting outside their jurisdiction.
Montana Supreme Court clarified that private person arrest statute applies only to private persons, while out-of-jurisdiction peace officers may arrest under private-person standards but process under peace-officer rules; ultimately held the arrest lawful.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Authority of out-of-jurisdiction officers to arrest	Updegraff argued deputies acted as private citizens and violated §46-6-502.	State argued deputies could rely on private-person arrest standards and community-caretaker rationale.	Arrest lawful under clarified framework.
Application of private person arrest statute to peace officers	Private-person statute not applicable to peace officers; arrest outside jurisdiction illegal.	Statute could support private-person-like arrest in exigent circumstances.	Private person statute applies only to private persons; out-of-jurisdiction officers may arrest if circumstances would justify a private person, processing under peace-officer rules.
Community caretaker doctrine applicability to out-of-jurisdiction officers	Doctrine could justify welfare-related contact as part of community caretaking.	Williamson bars extension of peace-officer community-caretaker powers to out-of-jurisdiction officers absent explicit authority.	Court allowed contact under community caretaker framework; not required to rely on private arrest theory.
Probable cause and immediacy of arrest	Decisions to arrest were justified by observed intoxication, alcohol odor, cans, and driver’s intent to leave; immediate arrest warranted.	Probable cause existed and exigent circumstances supported immediate action.	Probable cause supported arrest; immediacy justified under private-person standard, processing under peace-officer framework.
Searches and evidence gathered incident to arrest	Private-person status would limit searches and evidence collection.	Arrests processed as peace officers permit broader investigative actions at scene.	Private-person arrest statute not controlling for searches; processing allowed under peace-officer framework.

Key Cases Cited

State v. McDole, 226 Mont. 169 (1987) (out-of-jurisdiction officer may arrest under circumstances a private citizen could)
State v. Sunford, 244 Mont. 411 (1990) (out-of-jurisdiction officer may arrest as private citizen when circumstances permit)
State v. Maney, 255 Mont. 270 (1992) (private-person arrest statute not fully controlling when officer outside jurisdiction)
State v. Hendrickson, 283 Mont. 105 (1997) (extends limits on private-person arrest and confines post-arrival actions)
State v. Williamson, 1998 MT 199 (1998) (out-of-jurisdiction peace officer may arrest under private-person standards; lacks authority under certain stops)
State v. Schubert, 2010 MT 255 (2010) (private person may rely on information from reliable third parties for probable cause)