Young South Dakota deputy dies three days after being shot during a confrontation at a home
Sioux Falls Deputy Katherine Frank Killed in Home‑Invasion Shooting
A 26‑year‑old deputy of the Minnehaha County Sheriff’s Office, Katherine Frank, died Monday after being shot during a confrontation at a Sioux Falls residence. The incident also left the suspect wounded and charged with multiple counts of attempted murder and assault against law‑enforcement officers.
The shooting occurred Friday night at a house in Sioux Falls, just minutes after deputies arrived to investigate a reported disturbance. According to the sheriff’s office, gunfire erupted roughly 30 minutes into the response, striking Deputy Frank and the suspect, Brandon John Oetken, a 39‑year‑old resident of the city. Both were treated on the scene before being transported to local hospitals. Frank remained in a critical condition for three days before succumbing to her injuries. She was surrounded by family and colleagues at the time of her death.
Oetken was later taken into custody without bail. Minnehaha County jail records list a felony charge of disarming an officer in addition to the pending accusations. Prosecutors have not yet announced whether they will add further charges in light of the deputy’s death. The South Dakota Division of Criminal Investigation, at the sheriff’s request, is leading the investigation. The state Attorney General’s office, headed by Marty Jackley, will review the use of force in the encounter and is expected to release a public report within 30 days.
“This is a tragic loss for our agency and the wider law‑enforcement community in and around Sioux Falls,” the sheriff’s office said. “Deputy Frank served the citizens of Minnehaha County with professionalism, humility, and dedication. Her absence will be felt deeply by all who had the privilege of working with her.” The office also noted that Frank had become an organ donor in her final act of service, continuing to help others even after her passing.
Attorney General Jackley offered his condolences: “We mourn the loss of Minnehaha County Sheriff’s Deputy Katherine Frank, who sacrificed everything in the line of duty to keep us safe. Let us never forget her courage and the service of all of our law‑enforcement officers. Deputy Frank and her family remain in our prayers.”
Deputy Frank had joined the sheriff’s office in June 2024 after working at the South Dakota State Penitentiary since September 2022. She was 26 at the time of her death.
This shooting marks the fifth incident involving law‑enforcement officers in South Dakota this year, according to the Attorney General’s office. While the specifics of the confrontation are still being investigated, the facts that stand out are the deputy’s quick response to a domestic disturbance, the sudden escalation into gunfire, and the fatal outcome for a young officer who had only recently entered the field of public service.
The community of Sioux Falls and the broader law‑enforcement network are left to grapple with the loss of a dedicated officer and the ongoing questions surrounding the suspect’s motive and the circumstances that led to a tragic escalation. As investigators work to piece together the events of that Friday night, the state’s commitment to a thorough review and transparent reporting remains a promise to the public and to those who served alongside Deputy Frank.
