The gunman killed one worker at the site and wounded two others , police have said . Police officer will be freed in Chicago and Illinois shootings . Analysis of computer shows he was at home at the time of crimes . three person was killed and One wounded in shootings south of Illinois .
Police officer will be freed in Chicago and Illinois shootings . Analysis of computer shows he was at home at the time of crimes . three person was killed and One wounded in shootings south of Illinois .