 A more detailed search of the apartment, conducted by the Milwaukee police's Criminal Investigation Bureau, revealed a total of four severed heads in Dahmer's kitchen.A total of seven skulls—some painted, some bleached—were found in Dahmer's bedroom and inside a closet.In addition, investigators discovered collected blood drippings upon a tray at the bottom of Dahmer's refrigerator, plus two human hearts and a portion of arm muscle, each wrapped inside plastic bags upon the shelves.