Fire officials said the man was partying when he fell off a jet ski. He was under the water for about 15 minutes when emergency crews pulled him out near the 59th Street Harbor.
[Ads /]
The man was transported to the University of Chicago Medical Center, where he later died. The victim has been identified to the Cook County Medical Examiner's Office as 52-year-old James Earl Jefferson.
Officials said he wasn't wearing a life jacket. In a tweet, the fire department urged jet ski users to wear life jackets.
[Ads /]