Authorities aren't saying which of the four suspects they have in custody shot and killed a Cumming grocery store security guard Sunday night.
Forsyth County Sheriff Ted Paxton said the suspects, at least two of whom are county residents, have been charged in connection with the incident, which occurred at Ingles on Canton Road.
The fourth suspect, 19-year-old Nakitta J. Holmes of Buford, was arrested late Monday and charged with one count of murder and two counts of armed robbery.
Earlier in the day, authorities charged Sharod Johnson, 18, of Ballybandon Court and a 16-year-old boy with one count each of murder and armed robbery.
Tyrice Kendall Adside, 19, of Spencer Street has been charged with one count of murder and two counts of armed robbery.
According to the sheriff's office, the three adults have first appearance hearings Wednesday in Magistrate Court. No bonds have been set.