A man was stabbed and critically wounded on a Blue Line train in the Loop Thursday evening.
The man, 42, was on a train in the first block of South Dearborn Street when someone stabbed him in the leg and lower back about 5:15 p.m., Chicago police said.
He was taken to Northwestern Memorial Hospital in critical condition, police said.
A suspect was taken into custody, police said.
No charges have been announced.
