Minnehaha County Sheriff's Office

10/28/2026

Deputy Katherine Frank Memorial T-shirts

MCSO will distribute the remaining memorial T-shirts honoring Deputy Katherine Frank, with 100% of proceeds going directly to her family.

Location: Minnehaha County Emergency Management (north garage doors) 608 N. Sigler Ave., Sioux Falls, SD 57104

Thursday, October 29, 2026

Noon–5:30 p.m. or until sold out!

Cash or check donations are encouraged

Let’s continue to honor Katherine’s memory, show our support, and remind her family that they are not alone.

Send a message to learn more

10/20/2026

Thank you to everyone who helped honor Deputy Katherine Frank. Your support and compassion meant so much. A special thank‑you to her family for sharing her with our community. We’re also deeply grateful to the law enforcement officers who traveled from all over the country to stand with us. Her service will never be forgotten.

KELOLAND’s Chief Photographer Kevin Kjergaard captured scenes from the tributes ahead of the 1 p.m. funeral.

10/19/2026

Friends and coworkers of Deputy Katherine Frank are distributing Memorial T-shirts in her honor to help support her family during this difficult time; 100% of the proceeds will go directly to her family.

They invite everyone to stop by the Minnehaha County, Emergency Management building, located at:

608 N. Sigler Ave., Sioux Falls, SD 57104 East Side of Building.

Monday, October 19, 2026 – 8:30 am until noon.

Cash/ Check donation is encouraged, with all proceeds going to Katherine’s family.

Let us all come together as a community to honor Katherine’s memory, show our support, and remind her family that they are not alone.

10/18/2026

Please join us in honoring Deputy Katherine Frank.

10/16/2026

Friends and coworkers of Deputy Katherine Frank are distributing Memorial T-shirts in her honor to help support her family during this difficult time; 100% of the proceeds will go directly to her family. Only 1,000 t-shirts have been purchased, so arrive early to guarantee you get a t-shirt!

They invite everyone to stop by the Sioux Falls Law Enforcement Center, located at:

320 W. 4th Street, Sioux Falls, SD, on Friday, October 16, 2026 – 1pm until 5 pm

Visitors can take a moment to stop at Deputy Frank's memorial and receive a memorial T-shirt.

T-shirts will also be avaliable Monday, October 19, 2026 – 8:30 am until 11 am. -Location TBD

Cash/ Check donation is encouraged, with all proceeds going to Katherine’s family.

Let us all come together as a community to honor Katherine’s memory, show our support, and remind her family that they are not alone.

10/14/2026

Funeral services for Minnehaha County Sheriff’s Deputy Katherine Ann Frank will be held on Monday, October 19, 2026, at 1:00 p.m. at the Denny Sanford PREMIER Center, located at:

1201 N. West Avenue
Sioux Falls, SD 57104

This invitation is extended to all law enforcement agencies and any members of the public who wish to attend and pay their respects to Deputy Frank.

Community members wishing to show their support will have the opportunity to line the procession route. Additional details, including the route, door opening times, and other service information—will be shared as they are finalized.

The Minnehaha County Sheriff’s Office extends its sincere appreciation to the law enforcement community, the citizens of Minnehaha County and Sioux Falls, and all who have offered support to Deputy Frank’s family and our agency during this difficult time.

Further updates will be provided as information becomes available.

10/12/2026

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.

10/10/2026

** Update **

The suspect in the shooting of the Minnehaha County Sheriff’s Deputy has been identified as Brandon John Oetken, a 39‑year‑old Sioux Falls resident. A criminal complaint has been filed by the Minnehaha County State’s Attorney’s Office charging Oetken with three counts of Attempted First‑Degree Murder of a Law Enforcement Officer- Premeditation, and three counts of Aggravated Assault on a Law Enforcement Officer.

As with all Officer‑Involved Shootings (OIS) in the State of South Dakota, the Division of Criminal Investigation (DCI) is conducting a thorough, impartial, and transparent investigation. The Attorney General will issue a summary of the findings within 30 days.

**Original Post**

On October 9, at approximately 7:00 p.m., Deputies were dispatched to the 2900 block of S. Keyrell Dr. in Sioux Falls, South Dakota. Deputies arrived on scene at roughly 7:32 p.m. Approximately 30 minutes after their arrival, shots were fired and a Deputy and the suspect were struck by gunfire.

Immediate medical aid was rendered on scene to the injured Deputy and the suspect. The Deputy was transported to a local hospital and is in critical condition. The suspect was transported to a local hospital to be treated for injuries.

The Sioux Falls Police Department responded promptly and secured the area until the South Dakota Division of Criminal Investigation (DCI) assumed control of the scene. Additional support was provided by the South Dakota Highway Patrol, the Lincoln County Sheriff’s Office, Brandon Police Department, Sioux Falls Fire Rescue, and Patient Care EMS.

There is no danger to the public at this time.

Further updates will be provided as the investigation progresses.

07/08/2026

The Blue Envelope Program in Minnehaha County will provide law enforcement with additional information when they interact with someone with special needs. This is not a “get out of jail free” card; however, this type of program creates trust and minimizes misunderstandings.

The Sioux Falls Police Department, the Minnehaha County Sheriff's O...

06/13/2026

⭐️ Join us at Walmart on 60th Street North in Sioux Falls, to support the Children’s Miracle Network 👧🏼💫 🧒🏻

Local fire departments and law enforcement 👮🏻‍♀️ 👮🏽‍♂️will compete to see who can raise the most funds!

Bring your donations and help out a great cause!