Two people familiar with the case say investigators have video evidence of an off-duty NYPD undercover detective pounding on an SUV during a melee with motorcyclists.
The people were not authorized to discuss the investigation and spoke on condition of anonymity.
His lawyer had said Monday that the detective only witnessed other bikers attacking the vehicle.
The driver was pulled from his SUV on Sept. 29 after hitting a Massachusetts motorcyclist. The driver’s wife said he was fleeing to protect her and their 2-year-old.
Four bikers have been charged in the case. One of them, Craig Wright, was arraigned Tuesday on assault and other charges.
His attorney says Wright will fight the charges.