A woman stabbed a man Thursday afternoon after he instructed her to put a mask on inside a West Town convenience store.
The woman entered the store in the 500 block of North Halsted Street about 12:35 p.m. without a mask, according to Chicago police.
A 48-year-old man told her to put a mask on and she pulled out a knife and stabbed him, police said.
He was taken to Northwestern Memorial Hospital in critical condition, police said.
Area Three detectives are investigating.