Except as provided in 46-4-409, all custodial interrogations must be electronically recorded. The recording must contain a peace officer advising the person being interviewed of the person's Miranda rights, a recording of the interview, and a conclusion of the interview.
Recordings Required
Mont. Code Ann. § 46-4-408, under Custodial Interrogations -- Recording.
Mont. Code Ann. § 46-4-408