Former Missouri state trooper sentenced to prison for unlawful phone searches during traffic stops

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Thomas C. Albus, U.S. Attorney for the Eastern District of Missouri | Official website

Former Missouri state trooper sentenced to prison for unlawful phone searches during traffic stops

A former Missouri State Highway Patrol trooper was sentenced on Mar. 11 to 21 months in prison after searching women’s cell phones for nude images during traffic stops, according to a statement from the U.S. Attorney's Office for the Eastern District of Missouri.

The case highlights concerns about law enforcement misconduct and privacy rights. David McKnight, age 40, admitted to unlawfully searching the phones of nine women without a warrant or probable cause between September 2023 and July 2024 while on duty in uniform and using a marked patrol vehicle.

Prosecutors said McKnight took victims’ phones back to his vehicle under false pretenses, such as verifying identification or insurance information. He used his own phone to photograph images he found in seven cases and deleted these photos afterward, but forensic analysis later recovered them. Two victims reported their suspicions to authorities, leading investigators from the Missouri State Highway Patrol and the Federal Bureau of Investigation to uncover additional victims.

McKnight pleaded guilty in December in U.S. District Court in Cape Girardeau to nine counts of deprivation of rights under color of law. Assistant U.S. Attorney Christine Krug wrote that McKnight’s “conduct in this case was inexcusable and demands a sentence of incarceration.”

The U.S. Attorney's Office for the Eastern District of Missouri investigates and prosecutes federal crimes such as terrorism and fraud while enforcing civil rights; it collaborates with law enforcement agencies across its jurisdiction according to its official website. The office serves 49 counties across eastern Missouri through locations including the Thomas F. Eagleton U.S. Courthouse in St. Louis and Rush H. Limbaugh Sr. U.S. Courthouse in Cape Girardeau as noted by the office.

Broader implications from this sentencing reinforce federal efforts against violations committed by public officials while emphasizing ongoing initiatives by prosecutors working with community entities to prevent crime and improve quality of life according to the official website.