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CHICAGO -- The body of a man has been recovered from Lake Michigan hours after he disappeared while swimming.

The fire department marine unit was called to Bryn Mawr Beach at about 1 a.m. Thursday.

The 55-year-old man and a woman had got in the water to swim.

The woman managed to get out, but she saw the man was struggling in the water.

She and a friend tried to rescue the man, but were unable to get him out. They lost sight of him, and then called 911.

The search was hampered by 3-to-6 foot waves and poor visibility in the water.

Divers resumed their search at daybreak, and his body was found near the dog beach in the 700 block of West Foster.

55-year-old man killed in rough waters overnight. Recovery effort underway along the lakefront just n of Montrose Beach. pic.twitter.com/DfcNQZV6Yp — Sarah Jindra (@SarahJindra) August 31, 2017

Fire and Coast Guard crews recovered his body from the water.