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Case Description
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Mary Ann Bier, a 64-year-old white female from Powell, Wyoming, died on August 7, 2017, in what authorities determined to be a murder-suicide. Originally from Janesville, Wisconsin, Mary Ann was known for her independent spirit, environmental advocacy, and deep love for her family. She had moved to Wyoming in 1994 and worked as a rural postal carrier until her retirement in 2015. Her life was marked by a strong connection to nature and community, and she was affectionately regarded by neighborho ...Read More
Links to Additional Sources (14)
See any mistakes?Victim Details
Mary Ann Bier
Female
White / Caucasian
Powell
WY
2017-08-07
64
Mary
Ann Bier
Primary Suspect Deceased
11/09/2025

