Police are investigating a domestic violence incident in which a Memphis woman died.

According to the Memphis Police Department, Santrez Traylor, 34, is accused of hitting a 31-year-old woman with his car around 9 p.m. Sunday. He was arrested and charged with second-degree murder and two counts of aggravated assault, authorities said. Officers initially responded to a call about someone who was armed.

Witnesses told WHBQ they saw the entire incident unfold in front of the victim's home.

"I witnessed a murder," neighbor Jay Smoot told WHBQ. "It's pretty, pretty overwhelming."

Witnesses said they heard a confrontation between the victim and her boyfriend, Traylor.

One neighbor said Traylor hit the victim with a brick.

“She was standing when he first hit her and then she fell down and he repeatedly was hitting her with the brick,” a neighbor said. “(He was) kicking (and) punching her. He was trying to make sure she was dead.”

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Moments later, witnesses said, Traylor went into the home and got keys to a car in the driveway and repeatedly ran her over.

“He was backing up the car and running over her, backing up the car and running over her. I witnessed it about four times,” a neighbor said.

According to a police affidavit, Traylor was charged with criminal trespassing and domestic assault almost a month ago when he came to the victim's home threatening to hurt their children.

The document also detailed several other incidents of domestic violence between the suspect and victim.

Traylor ran away from the scene before officers arrived, but he was later arrested and charged with second-degree murder and two counts of aggravated assault.

Police didn’t specify if Traylor was armed at the time of the incident.