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.