Chicago Transit Authority

The CTA tweeted that there were “mechanical problems,” but some riders were concerned given last week's shooting on a train in New York City. On Twitter, Ling Luo said: “It seriously reminded me of what happened in NY, but fortunately not. The blue line train was stopped at Logan Square when it happened.”

CTA Red Line trains were delayed at 47th Street Saturday morning due to a person on the tracks.

Chicago activist Tio Hardiman says his volunteers won’t have weapons, but most are veterans and have martial arts skills.

Crime on Chicago's CTA is up 40-percent compared to a year ago.

The CTA and Metra ended the mask requirement Tuesday after the state of Illinois mandate was lifted for public transportation.

Effective immediately, masks will no longer be required on public transit, in public transit hubs, or in airports across Illinois.

A federal judge’s decision Monday to strike down a national mask mandate on airplanes and mass transit won’t change the rules on Metra and the CTA — for now.

A man was attacked and robbed while riding a CTA Red Line train early Monday on the Near North Side.

Four CTA passengers were robbed at gunpoint in separate incidents overnight on the Red and Pink lines.

A woman was robbed at gunpoint Thursday morning on a CTA Pink Line train in the Lawndale neighborhood.

A 40-year-old man was stabbed during a fight on a CTA Red Line train late Tuesday morning on Chicago's Near North Side — the fifth attack on the CTA in a week.

Following Tuesday morning's subway attack in Brooklyn, Chicago police say there is no "actionable intelligence" or any kind of threat in Chicago or on the Chicago Transit Authority.

Sunday's shooting was the fifth violent incident in the past week on the CTA. Other attacks included stabbings, and beatings on train platforms. On Monday, the operator of a Red Line train was lured by a person who claimed to need help retrieving their phone; that person then pushed the operator on to the tracks.

A man was shot after an argument on a CTA bus Sunday morning in Lawndale on the West Side.

Police said a man was stabbed and robbed Wednesday night at a CTA Green Line station in the South Loop but the transit agency said there is no video evidence supporting that the attack happened on their property.