According to search warrants, detectives got the samples by swabbing the inside of Gavin Grant's mouth. Police are comparing the DNA to evidence collected from a Cary apartment where a man was pistol-whipped last year.
Grant faces a long list of robbery-related charges. He remains in the Wake County Jail under a $250,000 bond.
Grant played on NC State's basketball team from 2004 to 2008 and most recently in the NBA Development League for the Utah Flash.