Authorities on Saturday said a group of three to nine school-aged robbers was listed in robbery reports taken throughout the month of June in the area west of Dunbar high school and north of Illinois Institute of Technology. The most recent case, on June 28 in the first block of East 29th Street in Bronzeville, involved a boy who was described as being between the ages of 6 and 8, and who "displayed a silver handgun and demanded money," according to a news release.