Detective Frank Flynn was killed in a three-vehicle accident while in Indianapolis.

   He and three other railroad detectives were riding in a vehicle when the driver sideswiped another vehicle he was attempting to pass.

   This caused their vehicle to be thrown sideways across the road when its rear struck a third vehicle traveling in the opposite direction.

   Detective Flynn, who was a rear-seat passenger, died en route to St. Vincent's Hospital from a skull fracture he suffered.

   The 45-year-old detective who was driving their vehicle was charged with manslaughter and speeding.

   Detective Flynn, from Jersey City, New Jersey, served as the national president of the Railroad Police and Crossing Watchmen's Association. He was survived by his wife and son.

The responsibilities of the Pennsylvania Railroad Police Department (1846–1968) are now under the jurisdiction of the CSX Transportation Railroad Police Department.

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This officer, discovered in 2020, has not been submitted for consideration as an eligible line of duty death to the National Law Enforcement Officers Memorial Fund by the CSX Transportation Railroad Police Department.