The discovery comes after a 15-year-old boy was swept out into Lake Michigan Monday near Diversey Harbor on Tuesday.
The teen was swimming with a group of friends when he disappeared and never resurfaced, police say.
After hours of searching for the missing boy, officials switched to a recovery mission, presuming he had drowned.
Police have not said if the body found Friday morning is connected to the missing teen.
RELATED: Lake Michigan search resumes for boy, 15, presumed drowned near Diversey Harbor
This is a developing story and will be updated when we receive more information.