South Dakota

811 murders reported in South Dakota from 1976 to 2025; police reports named an offender in about 92%. Explore the statistics →

Cases that span several states show only their locations in South Dakota. Open on the big map

Cases

Robert Leroy Anderson
1994–1996 · Sioux Falls, South Dakota
SerialConvicted2 victims
Robert Leroy Anderson, a meatpacking worker in Sioux Falls, South Dakota, abducted and killed two young women in the mid-1990s: Larisa Dumansky, 29, taken after her night shift at the John Morrell plant in August 1994,…
Donald Moeller
1990 · Sioux Falls, South Dakota
SingleExecuted1 victim
On May 8, 1990, nine-year-old Becky O'Connell walked to a convenience store in her Sioux Falls, South Dakota, neighborhood to buy sugar and candy and did not come home.
Murder of Anna Mae Aquash
1975 · Wanblee, South Dakota
SingleConvicted1 victim
Anna Mae Aquash, a 30-year-old Mi'kmaq activist from Nova Scotia and a prominent member of the American Indian Movement, was taken from Denver in December 1975, driven to Rapid City and onto the Pine Ridge Reservation,…
Murder of Sherry Arnold
2012 · Sidney, Montana
SinglePleaded guilty1 victim
Sherry Arnold, a 43-year-old math teacher at Sidney High School in Montana, was abducted at random while out on a morning run near her home on January 7, 2012, and killed.