CTA Red Line trains delayed, but moving after police activity at Wilson stop

CHICAGO -- Red Line trains are delayed on the city's North Side after an unauthorized person was spotted on the CTA train tracks near the Wilson stop. Trains are moving again Friday morning, but transit officials warn of "residual delays."

Trains were stopped at Wilson while police responded around 8:45 a.m. Friday. The CTA tweeted that crews had restored service.

Officials have not released any other information.