CHICAGO - Investigators are confused why a package containing 18 human heads was flagged by US Customs officials at Chicago’s O’Hare Airport, the Sky News reported. Initially it seems it was unclear whether the heads - which were reportedly still covered in skin - were legitimate anatomical specimens. But authorities have now concluded that they were properly frozen, wrapped and tagged as human specimens.

The heads had been sent to Chicago from a research facility in Rome. A spokeswoman for the Cook County Medical Examiner’s Office, Mary Paleologos has said foul play was not suspected. “There’s no issue with the transportation of body parts for medical purposes,” said Brian Bell, a spokesman for the Department of Homeland Security. “There’s nothing against the law that says you cannot ship them, provided you have the right documentation.” The body parts have been sent to the Cook County Medical Examiner’s office for further investigation and are being stored there until officials decide what to do with them, authorities said. Mr Bell added: “Everybody here is ‘oh my gosh, you got a box of heads’ and everybody thinks that it’s unheard of. It is a potentially legitimate medical shipment. We’ve seen it at various ports in the nation.”