Musbau Hamzat was charged with aggravated battery with a deadly weapon and aggravated battery against a transit passenger after he was identified as the man who stabbed a 35-year-old man Monday afternoon on the 79th Street train platform, located at 15 W. 79th St. in Chatham, Chicago police said.
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The two men were arguing on the platform just before 2:45 p.m. Monday when Hamzat stabbed the other man in the arm, according to police.
The victim was taken to the University of Chicago Medical Center in good condition.
Hamzat was arrested about 3:30 p.m. Monday in the 0- to 100-block of West 79th Street.
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He was due in bond court Wednesday.
Sun-Times Media contributed to this report.