ATLANTA — Atlanta police released information on the arrest of a security guard charged with killing a woman and wounding two other women in Midtown.

Police announced the arrest of 22-year-old Nkosi Thandiwe shortly after 6 p.m. Police said Thandiwe worked as a security guard in the same building where the three women worked.

Thandiwe is being held at the Fulton County Jail on one count of murder and two counts of aggravated assault.

Investigators say Thandiwe ambushed 26-year-old Brittney Watts by opening fire and killing her. One of the surviving victims was shot in the back and the other was shot in the ankle.

Thandiwe fled the scene, but later turned himself in after learning police had identified him as the shooter. No motive for the shooting has been released at this time.