In the early morning hours of October 1, 2015, a verbal argument between two security guards in the lobby of a Buckhead office building on Peachtree Road escalated into a fatal shooting. Emmanuel C. Nwankwo, 23, was shot multiple times and died at the scene in the building at 3348 Peachtree, formerly known as Tower Place 200. A handgun was recovered and Atlanta police identified 26-year-old colleague Dexter Harper as the suspect; he was taken into custody and charged with murder.

At a preliminary hearing a detective recounted that Harper claimed he saw a demon in Nwankwo and said God had told him to commit the act. The judge denied bond after the victim’s father, Emmanuel Nwankwo Sr., made an emotional plea. Harper’s attorney said Harper would undergo a psychological evaluation. The shooting shocked others who worked in the building.

Does anyone have information about Emmanuel Nwankwo’s last shift, the argument in the lobby, or witnesses who were in Tower Place 200 that morning?