Police Officer John Jantzen

Police Officer John Jantzen

Suffolk County Police Department, New York

End of Watch Sunday, April 21, 1991

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John Jantzen

Officer Jantzen was shot and killed when walking in on a dispute with a gun in progress while off-duty. Officer Jantzen entered a restaurant at the corner of Middle County Road and Stony Brook Road where a man was holding his wife and a restaurant employee at gun point with a 12-gauge shotgun.

When Officer Jantzen attempted to intervene he was shot and killed. The suspect then shot and killed his wife and the restaurant employee. The suspect then fled the scene. Officer Jantzen's brother, also a Suffolk County Police Officer was the first to arrive on the scene and find his brother.

The suspect was later apprehended and charged with murder. He was convicted of three counts of second degree murder and sentenced to 75 years to life. He will be eligible for parole in 2066.

Officer Jantzen had been a member of the Suffolk County Police Department for 6 years and is survived by his wife, son and mother and brother.


  • Age 32
  • Tour 6 years
  • Badge Not available

Incident Details

  • Cause Gunfire
  • Weapon Shotgun; 12 gauge
  • Offender Sentenced to 75 years to life

Most Recent Reflection

View all 26 Reflections

Officer Jantzen was my D.A.R.E teacher when I was 10 years old. I will never forget how nice he was. As a child it was first encounter with death. I remember the ceremony they held at my school for him. You are the wind beneath my wings was the song they played. I ended up becoming an Airborne Military Police Officer. And will always remember this brave man.

Robert Como
G4S Secure Solutions

October 20, 2019

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