By Suzanne Le Mignot

CHICAGO (CBS) — Police are investigating two separate cases after a severed head and multiple bags of body parts were found near the McKinley Park lagoon.

The first investigation began Friday after a severed human head was found by a park district contractor, who was cleaning the lagoon, CBS 2’s Suzanne Le Mignot reports.

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Police said a contractor found the remains around 10 a.m. in the lagoon at McKinley Park, near Pershing Road and Damen Avenue.

The head and body parts were sent to the medical examiner’s office, said Chicago Police Supt. Eddie Johnson.

Police are now covering a much larger area of McKinley Park. West 37th Street is closed between Damen and Archer, with numerous police officers and red tape surrounding the half-mile long crime scene.

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Sources said other body parts were found Friday in bags. The name of a funeral home was on at least one of the bags.

Police said they are investigating the findings as two separate cases.

The lagoon is being drained, because the water has been too murky for divers to search. Police said they will be on the scene for several more days, as the investigation continues.

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Police will stand on guard, 24-hours a day to make sure no one contaminates the crime scene.

Suzanne Le Mignot