CHICAGO (CBS) — Crews Wednesday night retrieved a man from the water at Rainbow Beach on the city’s South Side.

The Fire Department reported on Twitter that they sent a helicopter and divers to the scene.

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Friends said they lost sight of a man who had gone swimming, the Fire Department said.

As of 9:33 p.m., the helicopter crew had spotted the missing man. CBS 2 was there as divers were bringing the man to shore.

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The man was rushed to Advocate Trinity Hospital and was receiving advanced life support in an ambulance, the Fire Department said. His condition was described as very critical.