Brandon White, 20, of the 2400 block of Belgrade Court in Augusta, was captured on the morning of the homicide but was charged and held in connection to another, nonfatal shooting, according to Richmond County sheriff's Capt. Scott Peebles.
Charges against him have been upgraded to murder.
Investigators believe Collier's shooting in the 1900 block of Second Avenue was gang-related. However, authorities do not believe Collier was the intended target, Peebles said.
Carron Anthony Winfrey, 21, of 3515 Gardenbrook Drive in Augusta, turned himself in to authorities Monday evening, according to Sgt. Blaise Dresser. Johnny Patrick Thibodaux, 20, of 3706 Teakwood Court in Hephzibah, was also arrested Monday evening. Authorities believe Winfrey and Thibodaux were also involved in the nonfatal shooting on Sept. 12 near the intersection of Laney-Walker Boulevard and Twigg Street.
Charles Lawson III, 19, was shot once in the arm while driving, Peebles said. Lawson then lost control and flipped his vehicle.
Current charges against the three suspects include murder, three counts of aggravated assault and two counts of possession of a firearm during the commission of a crime.