A student was stabbed and critically wounded Tuesday at East-West University in the South Loop.
The stabbing happened about 1:10 p.m. in the 800 block of South Michigan, according to Chicago police.
Chicago Fire Department spokesman Larry Langford said the 20-year-old man was apparently stabbed by another student in a fourth-floor classroom. He was taken in critical condition to Northwestern Memorial Hospital.
Police said a 20-year-old man and a 42-year-old man were inside the "academic facility" when the 42-year-old displayed a folding knife and stabbed the 20-year-old in the upper back.
The 42-year-old man was taken into custody and charges are pending, police said.
Further details were not immediately available.