- 4 sleeping passengers shot, killed on CTA Blue Line in Forest Park, suspect in custody Chicago Sun-Times
- 4 people shot to death while sleeping on CTA Blue Line train in Forest Park, mayor says ABC7 Chicago
- 4 people were killed on a subway train near Chicago, apparently while sleeping, police say CNN
- Four passengers killed after gunman opens fire in Chicago-area train car on Labor Day: police Fox News
- 4 killed on train in Chicago-area appeared asleep before shootings, police say NBC News
Source: Google Finance – Market News