Sergeant Gordon R. Joinville

Sergeant Gordon R. Joinville

San Mateo Police Department, California

End of Watch Thursday, May 23, 1968

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Gordon R. Joinville

Sergeant Gordon Joinville was shot and killed while investigating the theft of a large amount of chemicals used in the production of LSD.

During the investigation he located a suspect at 5th and Claremont Streets. He requested a computer check on the subject but was told to standby due to high priority radio traffic. After that last transmission the suspect shot Sergeant Joinville twice before fleeing. The man was apprehended the following day as a result of an investigation in which the main clue was a license plate number Sergeant Joinville had written down on his clipboard.

On February 4th, 1969, the suspect was sentenced to death but the sentence was later commuted to life. He died in prison in 2006.

On October 5th, 1968, the Joinville Swim Center was opened on Kehoe Avenue in his honor. Sergeant Joinville had served with the San Mateo Police Department for 12 years. He was survived by his wife and two children.


  • Age 34
  • Tour 12 years
  • Badge Not available

Incident Details

  • Cause Gunfire
  • Weapon Gun; Unknown type
  • Offender Died in prison

narcotics, investigation

Most Recent Reflection

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Sharing today's Facebook post from the San Mateo Police Department: This morning our Honor Guard joined others from San Mateo County law enforcement agencies at the San Mateo County Fallen Officers Memorial in Redwood City. We paid tribute to both San Mateo PD Civil Service Officer Stephen Clark, who was killed in the line of duty in August 1956 and Sergeant Gordon Joinville, killed in May 1968. We remember their sacrifice today and always. To learn more about these officers, visit

You are not forgotten.

San Mateo Resident

May 3, 2022

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