The 21-year-old man was identified Monday as Lynell Bradley Jr., of the 6500 block of South Laflin Street in Chicago, according to the Cook County medical examiner's office. He was shot in the back and was taken to Stroger Hospital in serious condition, police said. He was pronounced dead there at 4:21 a.m., according to the medical examiner's office. An autopsy on Monday determined he died of multiple gunshot wounds.