The detective has been airlifted to a hospital. Forrest says doctors were doing tests to determine the extent of his injuries but he would not comment specifically on his condition.
Three people were arrested at the scene, about 25 miles north of Trenton.
Forrest says the detective and other undercover officers had stopped the car in a parking lot next to a tavern in the central New Jersey community of about 10,000 residents. He says they identified themselves as police before the driver accelerated.
He says the detective has worked for the Somerset County prosecutor's office for about eight years.
NEW YORK AND TRI-STATE AREA NEWS
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