CTA Yellow Line trains were halted for more than an hour during Tuesday’s morning commute because of debris on the tracks near the Howard station on the North Side.
All Yellow Line service was suspended about 8:30 a.m. because of the debris, according to service alerts from the CTA.
The tracks were cleared and trains were running again with residual delays by 9:58 a.m., the CTA said.
CTA officials and the Chicago police and fire departments could not immediately say what kind of debris prompted the service disruption.
