A former Atlanta police officer has been charged with murder in Douglas County.

Shawn Clark, 29, who served with the Atlanta police from March 4, 2010 to Jan. 7, 2013, was arrested Nov. 14 in Union City in connection with the fatal shooting that afternoon of Antonio Ellison, 27, Douglas County Sheriff’s Office spokesman Lt. Glenn Daniel said.

Clark and a woman had gone to a residence in the 2500 block of Winding Creek Drive in Lithia Springs to get her children and personal belongings, Daniel said.

Clark and Ellison argued and began fighting, and Clark shot Ellison with a handgun and left the scene, Daniel said.

Clark was identified as the suspect through interviews with witnesses and was arrested around 10:30 p.m. on the day of the shooting.

He was in the Douglas County adult detention center Wednesday.