Police have upgraded charges against a Gwinnett County man accused of shooting and killing another man during an argument outside a crowded Walmart, Channel 2 Action News reported.

Snellville police have filed murder charges against accused shooter Troy Hunte, 27, of Grayson. Hunte was arrested Sunday night on an initial charge of voluntary manslaughter in connection with the death of Fadil Delkic, 49, of Lawrenceville.

RELATED: Shooter was provoked in deadly Walmart parking lot argument, police say

He is being held in the county jail without bond on charges of felony murder, aggravated assault and possession of a firearm during the commission of a crime, according to records.

Fadil Delkic

Channel 2 Action News

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Channel 2 Action News

Investigators initially said Hunte was provoked when he shot Delkic, a Bosnian refugee who survived prison during the Bosnian War in the 1990s.

However, Gwinnett County District Attorney Danny Porter told Channel 2 Action News Friday that doesn’t seem to be the case after seeing surveillance video of the incident.

“(Delkic) actually left the first confrontation and went and parked,” Porter said. “Then, more or less, the fight was brought to him.”

Hunte’s girlfriend, who has not been identified, is then allegedly seen slapping Delkic in the face before Hunte pulls out his gun, Porter said.

Delkic was shot once in the chest about 6 p.m. Sunday in the parking lot of the Scenic Highway Walmart.

MORE: Victim, suspect ID'd in deadly Walmart parking lot shooting

“You can see in the video she approaches the vehicle, he steps out of the car and pretty quickly she hits him ... and then within seconds the victim is shot,” Porter said. “You can see in the video (Hunte) was on the phone and actually reached into his pocket, pulled the gun out and shot the victim.”

Police told Channel 2 that charges against Hunte’s girlfriend haven’t been filed but are “imminent.” She allegedly slapped Delkic after accused him of pulling his car too close to her family.

“It appears she is going to be charged,” Snellville police detective Jeff Manley told the news station.

Delkic was pronounced dead at Gwinnett Medical Center. A GoFundMe set up for Delkic's family has raised over $35,000 as of Friday afternoon. It's goal was set at $10,000.

Fadil Delkic, 49, was killed Sunday in the parking lot of the store on Scenic Highway in Snellville after a dispute with Troy Hunte, police said.