An auto body shop in suburban New Jersey found human remains in a car’s grill and undercarriage Monday, which investigators say came from a fatal pedestrian-involved multicar crash on the New Jersey Turnpike in December.

The Goodyear Auto shop in Linden, a town just west of New York City’s Staten Island borough, declined to comment Tuesday “out of respect for both parties — the customer and the victim.”

Linden Police Capt. Christopher Guenther said the woman was involved in the “documented” crash before dawn Dec. 29, in which multiple cars fatally struck a man pushing a shopping cart on the New Jersey Turnpike.

No charges are being filed against the woman who took her car to the auto shop for service. Guenther said police had turned over their investigation to the Essex County medical examiner because the driver’s car was surveyed after the incident and “for whatever reason, these body parts were not discovered during the initial investigation.”

“She may have thought she ran over some kind of debris, but as it turned out it was some remains,” Guenther said. “She wasn’t the initial striking vehicle, and for whatever reason, this stuff was underneath her car for around a month.”

Two of the drivers were injured in the incident near Newark, reported.