CHICAGO (WLS) -- A 12-year-old boy was shot in the stomach Saturday night in Chicago's East Garfield Park neighborhood. He was in critical condition at Stroger Hospital late Saturday. The shooting occurred at about 9:20 p.m. in the 3300-block of West Madison Street on the West Side. The boy was on the sidewalk when a man started firing shots into a group after an altercation with a woman, police said. A second victim, a 23-year-old man, sustained a gunshot wound to the right arm.  He was in stable condition at Stroger Hospital. No one was in custody Saturday night. Police are investigating.