“Blue Line trains are standing at Western due to an unauthorized person on the tracks. Crews working to restore service,” an alert from the transit agency said shortly after 3 p.m.

CHICAGO (CBS) --A person was hit by a CTA Blue Line train Friday afternoon on the West Side. CTA officials confirmed Blue Line trains were halted at the Western stop on the Forest Park branch ...

If you use the CTA Red and Blue lines, there will be some overnight service changes next week because of track maintenance.