Trooper Donald Bert Ziesmer

Trooper Donald Bert Ziesmer

Minnesota State Patrol, Minnesota

End of Watch Monday, October 15, 1973

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Donald Bert Ziesmer

Trooper Donald Ziesmer was shot and killed while making a traffic stop of a van on Highway 61 near Tofte.

One of the occupants exited the van and opened fire with a .22 caliber rifle, striking Trooper Ziesmer while he was still sitting in his patrol car. The man then committed suicide.

Trooper Ziesmer was a United States Navy veteran and had served with the Minnesota State Patrol for 13 years. He was survived by his wife and three daughters.


  • Age 46
  • Tour 13 years
  • Badge 180
  • Military Veteran

Incident Details

  • Cause Gunfire
  • Weapon Rifle; .22 caliber
  • Offender Committed suicide

traffic stop

Most Recent Reflection

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Trooper Zeismer,
On today, the 50th anniversary of your death I would just like to say thank you for your service and sacrifice-not just as a Law Enforcement Officer but for our Country as well when you served with the U.S. Navy during World War II and the Korean War. And to your Family and loved ones, I wish to extend my deepest sympathy.

Fair Winds And Following Seas

United States Border Patrol

October 15, 2023

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