Authorities investigating the 1989 slaying of a 10-year-old girl from suburban Cleveland are asking for the public's help in identifying what they say could be a key piece of evidence in the case.

Law enforcement officials held a news conference Thursday to ask if anyone could identify a handmade curtain they believe was used to wrap up Amy Mihaljevic's (muh-HOL'-uh-viks) body. She was found in a field 60 miles southwest of Cleveland in February 1990, about four months after she was reported missing from her Bay Village home.

A retired FBI agent says testing has shown that hairs found on the curtain and a blanket found in the field appear to match a sample taken from the Mihaljevic family's dog in the early days of the investigation.