A 9-year-old boy arrested and charged with armed robbery at a McDonald’s last month has been arrested again in connection with a carjacking after he and three others jumped from a stolen car police chased through Chicago's Southeast Side. He was in the car with two 15-year-olds and a 14-year-olds Thursday night, the three older boys each charged with aggravated vehicular hijacking with a firearm. One of the 15-year-olds, the driver, was charged with aggravated possession of a stolen vehicle.