Police Officer John J. DeRoo

Police Officer John J. DeRoo

Islip Police Department, New York

End of Watch Thursday, December 4, 1947

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John J. DeRoo

Officer John DeRoo was killed when his patrol car struck a tree.

At 1:45 am, Officer DeRoo responded to a report of an unconscious man lying in the street when his patrol car struck a tree on a curve on the Montauk Highway. Officer DeRoo died at the scene from his injuries. The call he was responding to was later determined to be unfounded.

Officer DeRoo was a United States Coast Guard veteran. He was survived by his wife and sister.


  • Age 37
  • Tour Not available
  • Badge Not available
  • Military Veteran

Incident Details

  • Cause Automobile crash

single vehicle crash

Most Recent Reflection

View all 7 Reflections

Officer DeRoo,
On today, the 75th anniversary of your death I would just like to say thank you for your service and sacrifice-not just for your Community but for our Country as well when you served with the USCG during World War II. And to your Family and loved ones, I wish to extend my deepest sympathy.

Semper Paratus!

United States Border Patrol

December 4, 2022

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