Man stabbed on CTA train in Chicago's Loop, suspect arrested: police

CHICAGO - A man was stabbed on a CTA train late Thursday afternoon in downtown Chicago.

Shortly after 5 p.m., police say the 42-year-old victim was stabbed twice while on a Blue Line train in the 0-100 block of South Dearborn Street in the Loop.

The man was stabbed in the upper left leg and lower back, police said. He was transported to Northwestern Hospital in critical condition.

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A 25-year-old male suspect was taken into custody and is being questioned by detectives, police said. The circumstances of the stabbing are unknown at this time.

Around 5:30 p.m., the CTA tweeted that trains were bypassing the Monroe station due to police activity.

No further details were immediately available.