Bellevue, WA (KCPQ) -- People will apparently donate almost anything to Goodwill, but human skulls?

Employees at Goodwill in Bellevue say three human skulls were donated in June and now the King County Medical Examiner needs the public's help to find the person or people who donated them reported Q13FOX News in Seattle.

The ME said two of the skulls are believed to be from adults and were clearly used in a medical clinic or an instructional setting. 

But the third skull is very old and fragile and likely that of a Native American child.

"The Native American skull must be repatriated to its tribe of origin, by state law," said the Medical Examiner's Office in a statement. "However, additional details are needed, to properly identify the correct tribe or tribes. The Medical Examiner is requesting that the private citizen who donated the skulls provide information, without penalty, about the origin of the child's skull."

The ME's office says anyone who inherits clinical or archaeological remains can actually drop them off at the ME's office without penalty.

If anyone knows who donated these three skulls they are asked to call the ME's office at 206.731.3232.