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Detective William J. O'Brien | St. Louis Metropolitan Police Department, Missouri St. Louis Metropolitan Police Department, Missouri


William J. O'Brien

St. Louis Metropolitan Police Department, Missouri

End of Watch: Wednesday, March 16, 1949

Bio & Incident Details

Age: 68

Tour: 31 years

Badge # Not available

Cause: Gunfire

Weapon: Gun; Unknown type

Offender: Sentenced to life

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Detective O'Brien was shot and killed while making a routine check on a pawnshop. As he entered the shop he interrupted a robbery which was taking place and was shot in the chest. The two suspects then shot and wounded the owners before fleeing with stolen property.

Both suspects were later apprehended, convicted of murder, and sentenced to life in prison.

Detective O'Brien was assigned to the Tracing Bureau and had been with the agency for 31 years. He was survived by his wife and daughters.

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Most Recent Reflection

Your heroism and service is honored today, the 63rd anniversary of your death. Your memory lives and you continue to inspire. Thank you for your service. My cherished son Larry Lasater was a fellow police officer who was murdered in the the line of duty on April 24, 2005 while serving as a Pittsburg, CA police officer.

Time never diminishes respect. Your memory will always be honored and revered.

Phyllis Loya
Mom of fallen California Officer Larry Lasater, Pittsburg PD, eow 4/24/05
March 16, 2012


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