A woman was shot and killed Wednesday in Cragin on the Northwest Side. The woman was inside a store about 11:30 p.m. in the 4800 block of West Fullerton Avenue when a man confronted her and their altercation turned physical, Chicago police said. The man shot the woman in the head, then fled in a dark-colored SUV. The woman was taken to Mt. Sinai Hospital where she was pronounced dead, police said. Unconfirmed police radio chatter suggests that the shooting happened at a Walgreens. The shooter was wearing a red hoodie and dark jeans, police said. No one is in custody. Area North detectives are investigating.