A gunman toting an assault rifle got out of a vehicle and shot a child, a teenager and a young man to death on a street before the car sped away, police said. Three male victims, believed to be 7, 17, and 20 years old, died at the scene Friday, assistant police Chief George Gascon said. Another boy, who appeared to be between 12 and 14, was shot and hospitalized in critical but stable condition. Investigators were trying to determine if there was a link between the victims and the gunman, Gascon said. Three of the victims were related. Police initially said the shooting appeared to be gang-related, but later said they could not confirm that. A city councilwoman announced a $75,000 (â‚¬59,000) reward for the arrest and conviction of the gunman.