206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Case Description
Any updates on this case?
On July 9, 1988, 28-year-old white female Anna Marie Steffen was murdered in Rochester, New York. She was one of several victims in a series of killings that would later be attributed to Arthur Shawcross, a convicted serial killer known as the Genesee River Killer. At the time of her death, Anna Marie Steffen was working as a sex worker, a detail that tragically placed her within the pattern of victims targeted by Shawcross.
Her body was not discovered until September 11, 1988, when it wa ...Read More
Her body was not discovered until September 11, 1988, when it wa ...Read More
Links to Additional Sources (8)
See any mistakes?Victim Details
Anna Marie Steffen
Female
White / Caucasian
Rochester
NY
1988-07-09
28
Anna
Marie Steffen
11/19/2025





