Detective Patrolman Patrick J. O'Neill

Detective Patrolman Patrick J. O'Neill

Chicago Police Department, Illinois

End of Watch Wednesday, March 23, 1921

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Patrick J. O'Neill

Patrolman Patrick J. O'Neill, of the Detective Bureau was shot at 10:00 p.m. in the rear of 6415 Washtenaw Avenue as he and several other police officers attempted to make an arrest.

When Patrolman O'Neill and fellow officers surrounded the building, the gunman ran out the rear door and opened fire. Patrolman O'Neill suffered multiple gunshot wounds and succumbed to his injuries at 11:30 pm the same day.

The brother-in-law and sister of the killer were arrested and on April 22, 1921, indicted on the charge of accessory to murder. On July 30, 1921, the killer was arrested in St. Paul, Minnesota. On September 28, 1921, the case against the killer's The brother-in-law and sister were nolle prossed. On October 14, 1921, Officer O'Neill's killer was sentenced to hang December 15, 1921. He escaped from the County Jail on December 11, 1921. He was never recaptured; It was reported that he died in 1951.

In 1927 the suspect was responsible for planning a robbery of a pharmacy in Detroit, Michigan. A gunfight took place resulting in the deaths of the two suspects and Officer Stacey C. Mizner of the Detroit Police Department.

Patrolman O'Neill was survived by his wife and three children.


  • Age 45
  • Tour Not available
  • Badge 2963

Incident Details

  • Cause Gunfire
  • Weapon Gun; Unknown type
  • Offender Escaped from prison

Most Recent Reflection

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My name is Patrick Joseph oneill the third,He was my great grandfather, I heard a lot about him from my grandfather (Patrick J Oneill) When I was very young .Very happy to see this page so I can pay my respects.No I never knew him he sounds very much like an honorable man, may he rest in peace

Not a policeman
Great great grandson

March 28, 2021

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