As of 8:45 a.m. because of defective equipment northbound at California/Milwaukee, Blue Line service was experiencing a service delay, according to the CTA's website.
"We had a northbound train that experienced defective equipment upon leaving the Blue Line's California station,'' Myles said.
Service between the California and Belmont stations was temporarily affected, according to Myles, who did not immediately know what the problem with the equipment was.
No one was injured, she said.
Myles said it was mostly northbound service that was affected and the website reported that some southbound trains were being turned back north to O'Hare at Belmont.
Alternate service was available via the #56 Milwaukee bus, according to the site, which urged travelers to allow extra time to get to their destinations.
Sun-Times News Group Wire © Chicago Sun-Times 2006