Stratford — Connecticut State Police say an "enforcement action" is pending against a driver who stopped to try to help at the scene of a fiery, wrong-way crash on the Merritt Parkway early Thursday that left four people dead.

State police said the driver left his pickup truck in the left lane on the northbound side of the highway and a state trooper who was responding to the wrong-way crash collided with the man's vehicle.

"We have nothing further to provide at this time as this is still an active investigation," the state police media relations unit said in an email Friday, when asked whether the driver had been charged or cited.

The trooper was taken to the hospital with minor injuries, but his status was not known on Friday.

"The involved trooper sustained minor injuries, however, we cannot speak for his status at the moment," state police said.

They said further information would be released when available.

State police have released the names of the three occupants of a Chrysler minivan that was struck by the wrong-way driver. The driver of the minivan was identified as 65-year-old Steven Rowland. His passengers were 80-year-old Thomas Lucian Vitale and 81-year-old Olga Vitale. Friends and neighbors said Friday that Rowland was the Vitales' nephew.

State police said the Chrysler Town and Country minivan was hit head-on by a wrong-way driver in a Honda CR-V who was going north in the southbound lanes of the highway. The impact caused the Honda to burst into flames and the driver's identity has not been able to be confirmed due to the extent of his injuries, state police said.

The wrong-way driver was first reported around 1:45 a.m. Thursday. State police said the crash occurred near the James Farm Road overpass.

Around the same time, a man in a Honda Ridgeline pickup truck spotted the crash site as he was driving in the northbound lanes, state police said in a summary of the incident.

The driver "parked his vehicle in the left travel lane, exited his vehicle and attempted to assist those involved in the collision on the southbound side of Route 15," leaving the pickup "abandoned," the report said.

State police said the trooper responding to the scene then struck the pickup truck from behind in his Ford Police Interceptor SUV. The crash set off the cruiser's airbags, the report said.

The driver of the Honda "was not in the vehicle at the time of the collision and therefore reported no injuries," the report said.

Stratford medics took the state trooper to the hospital with minor injuries.

"Enforcement action is pending at this time," the report concluded, without specifying what charges the driver may face.