10/13/2026
The East Grand Forks Police Department sends our thoughts and prayers to the staff of the Minnehaha County Sheriff’s Office and the family of fallen Deputy Katherine Ann Frank.
Passing of Deputy Katherine Frank -
The Minnehaha County Sheriff’s Office announces with profound sadness the passing of Deputy Katherine Frank, age 26, earlier today. Deputy Frank was surrounded by her family and loved ones in her final moments. In her final act of service and generosity, she became an organ donor, continuing to help others even in her passing. Katherine worked at the South Dakota State Penitentiary from September 2022 until being hired with the Minnehaha County Sheriff’s Office in June 2024.
Deputy Frank’s death is a significant loss to our agency and to the broader law enforcement community in and around Sioux Falls. She served the citizens of Minnehaha County with professionalism, humility, and dedication. Her absence will be felt deeply by all who have had the privilege of working alongside her.
A memorial has been established at the Law Enforcement Center located at 320 W. 4th St., Sioux Falls, SD, for those who wish to pay their respects. The Sheriff’s Office will also continue maintaining a presence at the hospital as we support her family during this difficult time.
Further information regarding funeral services, honors, and departmental arrangements will be provided as soon as it becomes available.
Deputy Frank served with dignity and heart. Her service made a meaningful difference, and her impact will remain with us always.
