The District Attorney’s Office has concluded that a Carroll County deputy was justified in using deadly force in the fatal shooting of a man in December.

Marc Denver Thompson, 26 of Carrollton, was shot and killed by a Carroll County Sheriff’s Office deputy, Tyler Williamson, after the deputy responded to a Dec. 21 domestic dispute that escalated.

An investigation of the shooting was conducted by the Georgia Bureau of Investigation and completed April 20, and was then reviewed by the office of District Attorney Herb Cranford.

On Thursday, a press release from Cranford’s office reported that the DA had concluded that Williamson’s use of deadly force was reasonable to prevent death or great bodily harm to himself and others.

The release cited an assault by Thompson that had occurred earlier with a gun and knife, the probable use of methamphetamine that night, possible possession of a firearm, violent use of a shovel, violent actions in a store that caused the clerk to call 911, failure to follow commands of Williamson, and striking and injuring Williamson as reasons for reasonable use of deadly force.

The investigatory file given to the DA’s office contained recorded interviews, reports, 911 and dispatch audio, crime lab results, crime scene analysis including pictures and diagrams, the autopsy report, toxicology reports, video from patrol cars, body-worn camera videos, and security video footage.

According to the release, Thompson on the night of Dec. 21, while living at his mother’s house, smoked methamphetamine and later threatened his mother with a butcher’s knife and held a gun to both her head and Thompson’s brother’s head.

The family escaped and contacted law enforcement and reported that Thompson had multiple guns. A standoff by Carroll County Sheriff’s Office lasting four hours ensued but when law enforcement entered the residence, Thompson was not there.

Warrants were taken out for aggravated assault and shortly after 10 p.m, deputy Williamson stopped to refuel his car at the Circle K at 1871 N Hwy 27 in Carrollton. While there, he saw Thompson walk into the gas station with a shovel. Knowing what had happened earlier, he called for backup, the release said.

While calling for backup, the deputy saw Thompson strike at something behind the counter with the shovel. Security video footage from the investigation shows that Thompson can be seen striking a computer on the counter and lunging at the clerk and holding the shovel in an offensive position.

Williamson, thinking the clerk was in danger, entered the gas station and security video footage and 911 call audio, Williamson can be seen or heard showing his badge, identifying himself as law enforcement, addressing Thompson by his first name, and telling Thompson to get on the ground.

In the footage, Thompson can be seen continuing to hold the shovel in an aggressive manner and can be heard demanding the presence of uniformed officers and telling the deputy to “call [his] . . . friends.” Williamson repeatedly tried to get Thompson to drop the shovel and get on the ground.

Thompson instead charged at the counter and struck the deputy over the head with the shovel. Williamson in return fired his weapon, striking Thompson multiple times. The deputy can then be heard instructing the clerk to call for an ambulance.

Williamson was later taken to a hospital for his injuries and received six staples to close the wound on his head.

“I have concluded that this deputy did not violate the laws of the State of Georgia and I will not be presenting this case to the Civil or Criminal Grand Jury. Consequently, my office’s involvement in this matter is closed,” said the release.