Samaritano had served on the Elizabeth force for eight years, and police officials there would not comment on his death.
It was not immediately clear what caused the accident or when it had occurred. However, Detective Todd McClendon, a Newark police spokesman, said there were no signs of foul play and that no other vehicles appeared to have been involved.
Authorities believe Samaritano's car broke through a guardrail and dropped down an embankment, near the Haynes Avenue exit and the northern end of the airport.
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