Published: Jan 12, 2011 7:00 PM EST
Updated: Jan 12, 2011 4:00 PM EST

BRADENTON, Fla. (AP) - Police are trying to figure out the story behind a partial skull discovered in a cardboard box and wrapped in newspaper in the Bradenton Police Department's homicide evidence room.

 Police found the skull packed in a box marked "the skull" last Thursday.

According to an FBI report, it was found in 4 inches of water in Bradenton on 1974.

During a press conference this week, officials said police property personnel had inventoried the box and knew it existed, but because it wasn't connected to any case number it just remained unsealed, on a shelf.

The department plans to send the skull to a Florida Department of Law Enforcement lab for DNA testing to find out if specialists can carbon date it to determine the age.

(Copyright 2011 by The Associated Press. All Rights Reserved.)