The person was in critical condition with a head injury at Stroger Hospital, a fire official said.
Shortly after 10 p.m., Blue Lines train services were experiencing delays between Western (FP) and Pulaski, bypassing the Kedzie-Homan stop. Service was later restored.
Earlier, trains were suspended between UIC-Halsted and Cicero. Buses were being used to transport passengers. Alternate bus routes are No. 12, 20 and 126.
The incident occurred at about 8: 30 p.m. It was immediately unclear where the pedestrian was or which direction the train was going, according to the CTA.