4 people killed on Chicago-area L train likely didn’t even see the shooter, official saysbr br The shooting took place before 5:30 a.m. Monday aboard the Chicago area’s L system, on a Blue Line train that was moving near where the line ends in Forest Park, a suburb about 10 miles (16 kilometers) west of downtown Chicago. Rhanni S. Davis, 30, was later arrested on another Chicago Transit Authority L line, according to police. Authorities charged Davis with four counts of first-degree murder Tuesday.