Officer Daniel O'Brien of the Chicago Police News Affairs office says the package was spotted about 6 p.m. Monday at the Addison St. stop of the CTA's Blue Line. Detectives from the police Bomb and Arson unit were investigating.
The CTA temporarily halted both northbound and southbound "el" service between the Jefferson Park and Belmont Ave. stops on the Blue Line, but later restored service to all but the Addison St. station.
Police temporarily closed the Kennedy Expressway between Irving Park Road and Belmont Ave., but later reopened the expressway except for the Addison St. ramps.
The CTA says the Addison station will remain closed but trains will be able to run through the station.
The package was a suitcase that may have had some wires sticking out of it. Police removed it without incident.
Some streets around Addison and the Kennedy remained closed Monday evening.
The Associated Press contributed to this report