A callous New Jersey woman stabbed her fiancé in the chest and gave him a lift to the hospital — but left him outside in the car to die, prosecutors said.

Ciara Williams, 27, knifed Dennis Power, 35, during an argument in their Brick Township apartment Sunday afternoon, Ocean County Prosecutor Bradley D. Billhimer announced Tuesday. Williams drove him to a local hospital and quickly returned home before police arrived, Billhimer said.

Hospital staff found Power unconscious but breathing inside the car, prosecutors said. It was unclear how Williams got home, prosecutors said.

He was rushed into the facility, where doctors tried to no avail to save his life.

Multiple law enforcement agencies searched the area for Williams, prosecutors said. She lawyered up and turned herself in Monday evening, attorney at her side.

Williams was hit with murder and weapons possession charges, according to prosecutors.

She was being held at the Ocean County Jail on Tuesday pending a detention hearing.