The incident occurred at about 10:25 p.m. in the 100-block of West Lake Street.
Police said the 56-year-old victim was involved with a physical altercation with a male suspect and suffered a head injury.
The victim was found unresponsive and transported to Northwestern Memorial Hospital, where he was pronounced dead, police said.
A suspect was taken into custody and charges are pending, police said. Area Three detectives are investigating.
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