Senior Investigator Thomas M. O'Neill

Senior Investigator Thomas M. O'Neill

New York State Police, New York

End of Watch Wednesday, July 6, 2005

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Thomas M. O'Neill

Investigator Thomas O'Neill suffered a fatal heart attack shortly after a struggle with a suspect.

Investigator O'Neill was on duty and had stopped his department Vehicle at a Mobil Gas Station on Wicks Road in Islip. While at the station, the station attendant asked Investigator O'Neill to remove a disorderly man from the station who was refusing to leave. A struggle ensued and Investigator O'Neill was able to get the suspect handcuffed. He then called for an additional unit to transport the suspect.

Two troopers transported the suspect back to the Brentwood Station, and a third trooper accompanied Investigator O'Neill in his vehicle. While en route, Investigator O'Neill complained of chest pains and asked the other trooper to drive. When they arrived at the Brentwood station, Investigator O'Neill collapsed. He was helped up by other troopers, but collapsed again as an ambulance arrived. Efforts to revive him with CPR were unsuccessful. Investigator O'Neill died while en route to the Hospital.

Investigator O'Neill had served with the New York State Police for 33 years


  • Age 56
  • Tour 33 years
  • Badge 3763

Incident Details

  • Cause Heart attack

Most Recent Reflection

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It has been 16 years since that altercation on Wicks Road changed all our lives forever. You are and always will be our hero. You did your job and it cost you your life. My big brother gone in the blink of an eye. Your memories will always be in our hearts. I will honor and respect you and ALL police officers. Your jobs are not easy and YOU gave it your all. I will keep your memories alive by sharing stories and always supporting your brothers and sisters in blue. Your life our family , the NYSP and all that knew you. We wil love and miss you forever....

Your loving sister, Muriel

July 7, 2021

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