A search of a person, object, or place may be made and evidence, contraband, and persons may be seized in accordance with Title 46 when a search is made: (1) by the authority of a search warrant; or (2) in accordance with judicially recognized exceptions to the warrant requirement.
Searches And Seizures -- When Authorized
Mont. Code Ann. § 46-5-101, under Legality and Admissibility.
Mont. Code Ann. § 46-5-101