CHICAGO (CBS) — A gruesome discovery at a North Side recycling plant.

The lifeless body of a man was found there.

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The victim’s body was found trapped underneath steel at General Iron Industries near Cortland and Kingsbury in the Ranch Triangle neighborhood.

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The body was found around 7:00 Monday morning.

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Plant officials said they don’t know how he died but said the man was not an employee nor was he permitted on the property. Police are treating the area as a crime scene.