Brandon Oetken, 39, is accused of shooting Minnehaha County Sheriff’s Deputy Katherine Frank, 26, on Friday, Oct. 9, 2026. Frank died Monday, Oct. 12, 2026. (Contributed / Minnehaha County Sheriff’s Office)
The accused murderer of a Minnehaha County deputy could be punished with death.
The Minnehaha County State’s Attorney’s Office has upgraded the charges against Brandon Oetken, a 39-year-old Sioux Falls man accused of fatally shooting Deputy Katherine Frank.
Oetken was initially charged with attempted murder and disarming a law enforcement officer. Three days after the shooting, Frank died from her injuries, prompting prosecutors to file charges of first-degree premeditated murder of a law enforcement officer, second-degree murder of a law enforcement officer, two counts of attempted murder of a law enforcement officer and seven counts of aggravated assault against a law enforcement officer.
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