A graduate student at the University of North Carolina at Chapel Hill has been charged with first-degree murder and possession of a firearm on educational property in the fatal shooting of his professor, according to court documents. The shooting occurred inside a campus lab and led to an hourslong lockdown. The suspect, Tailei Qi, 34, made a brief appearance in court on Tuesday and was ordered held without bond until his next court appearance on Sept. 18. The district attorney has stated that he will not seek the death penalty for this case. The campus chief of police said that the suspect and the victim "knew each other" but it is still too early to determine a motive for the shooting. The firearm used in the shooting has not been recovered, and it is unclear whether it was obtained legally or illegally. This tragic incident has left the campus community deeply shaken and highlights the continuing issue of gun violence in America.