Islip Police Department, New York
End of Watch: Thursday, December 4, 1947
Age: 37
Tour of Duty: Not available
Badge Number: Not available
Cause of Death: Automobile crash
Date of Incident: December 4, 1947
Weapon Used: Not available
Suspect Info: Not available
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.