state police crash 2 crop

A New Jersey State Police car is disabled in the median after a crash Wednesday morning on Interstate 78 in Hunterdon County. (Courtesy photo)

A New Jersey state trooper's slowing patrol car was struck from behind Wednesday morning by another state trooper on Interstate 78 West in Hunterdon County as they came to the aid of a motorist broken down in an eastbound lane, police said.

The rear-end crash happened at 7:27 a.m. as they neared the median at mile marker 14.7 in Union Township, Lt. Brian Polite said from state police headquarters in West Trenton.

Two New Jersey State Police troopers on Wednesday are in the median of Interstate 78 in Hunterdon County after a crash involving two state police vehicles. (Courtersy photo)

One of the troopers suffered a shoulder injury, Polite said.

A police supervisor was called out to investigate the "relatively minor" crash, Polite said, which is standard operating procedure in accidents involving troopers.

The troopers were responding "to an active incident" involving a broken down car "in a very hazardous location" in an eastbound lane of travel, Polite said.

While one trooper was treated at a hospital and then released, both troopers returned to duty by late morning, Polite said.

Police are not naming the troopers at this point, Polite said.

Tony Rhodin may be reached at arhodin@lehighvalleylive.com. Follow him on Twitter @TonyRhodin.