State ex rel. Offerdahl v. District Court (Mont. 1971)

Cascade County District Court. Russell James Offerdahl charged with selling mescaline in Gibson Park, Great Falls, Aug 14, 1970. Great Falls police received info from two informers; third informer volunteered to buy under surveillance but did not tell police who handed drugs/money. Montana Supreme Court held identity of vital material witness informer must be revealed unless information amended to protect double jeopardy.