James Jones has been charged with murder in the shooting death of Demarcus Boswell last month in the Chicago Lawn neighborhood.
Jones, 18, was also charged with attempted murder in the June 19 shooting in the 2800 block of West 71s Street.
Authorities said Boswell was walking on a sidewalk with a group of people when Jones approached on foot and fired multiple shots.
Boswell, of the 3300 block of West 65th Street, was shot multiple times and died less than an hour later at Holy Cross Hospital, authorities said.
Jones, of the 7000 block of South Artesian Avenue, was already being held at the Cook County Jail for a prior arrest when he was charged with the murder, according to police.