Leo Wagner, a 26-year-old member of the Blackfeet Tribe, was last seen April 27, 2021, near the St. Mary and Babb areas in northern Montana, close to Glacier National Park. Witnesses reported seeing a man who may have been Wagner walking near St. Mary Lake appearing intoxicated and injured; later sightings placed him on West Shore Road with an arm injury.

Search teams used sonar and divers and investigators examined a burglarized cabin near Big Nose Bay on May 2 where items belonging to Wagner and signs of a possible severe injury were found. The Blackfeet Fish & Wildlife Service and other authorities conducted searches for months; law enforcement scaled back active searching in May 2021 but kept the investigation open. Federal agencies, including the Bureau of Indian Affairs, later became involved under broader efforts to address missing and murdered Indigenous persons.

Wagner remains missing and the case is unresolved. If anyone has information about his movements around St. Mary, West Shore Road or Big Nose Bay in late April or early May 2021, please come forward.