Brandon Rock, 18, made his first appearance in court on Saturday. Prison records show he was arrested Friday for manslaughter and illegal possession of firearms on school property, WVUE-TV reported. Orleans Parish Commissioner Robert Blackburn raised the bond to $ 750,000, the station said. It was not clear if Rock had a lawyer who could comment on his behalf. Rock is one of four suspects identified by New Orleans police on Friday in connection with the fatal shooting of 80-year-old Augustine Greenwood, who was shot in the head as she walked to her family’s car after a grandson’s graduation ceremony in May 31 at Xavier. University. Still free: Laverne Duplessis, 40, wanted for manslaughter, obstruction of justice and illegal carrying of weapons on school property. Frank Bartholomew, 49, who is facing charges of obstruction of justice and a 15-year-old minor whose name has not been revealed. The teenager faces the charge of illegal possession of firearms on school property. At a press conference on Friday, the Police Department. Sean Ferguson said the shooting in the university parking lot began when people accompanying two quarreling female students escalated the conflict by pulling out guns and shooting. Rock was described as one of the injured on the scene, while the homicide charge shows that the police believe that he and Dyplessis are criminally responsible for Greenwood’s death. Greenwood was buried after a funeral Friday.