A suspect has been arrested in connection with a deadly hit-and-run in New Jersey Monday evening, law-enforcement sources tell NBC New York.

Charges against the unidentified suspect in custody are unclear, and the prosecutor's office would not provide more information.

Police were investigating witness reports that the woman killed in the Fort Lee incident appeared to have been the victim of a targeted attack, law-enforcement sources say.

Officers were originally called to Anderson Avenue and Inwood Terrace at about 5:20 p.m. for a report of a pedestrian struck.

Witnesses told authorities they saw the driver mow the woman down and that it did not appear accidental. He allegedly backed up and ran over her a second time before fleeing the scene, witnesses said.

Gene Hoffman, a Wells Fargo manager who was at his office at the time of the incident and saw the victim after she had been hit multiple times, called the scene "horrific."

"I haven't seen anything like that since I was overseas in combat," Hoffman said.

Police are investigating whether an abandoned black sedan found about a mile from the scene may have been involved in the hit-and-run.

Authorities hope surveillance video that caught the incident on tape will provide insight into what happened.

Two people who witnessed the hit-and-run said it appeared to begin as some type of argument. Hong Liu and his mother Fengying Gao told NBC New York the driver pulled up alongside the woman as she walked down the street.

Residents were frightened by the commotion.

"Police closed the roads, and we were very nervous," said area resident Rakel Daniele. "It's kind of scary, you know."