OLYMPIA, Wash. -

The Thurston County coroner's office is trying to determine the age, gender and identity of human remains that have been found on the Nisqually Indian Reservation.

A search began after a dog returned to a home last week with a human leg.

The Thurston County sheriff's office says the search over the weekend found more parts -- a rib cage, pelvis and parts of a skull, including a jawbone with teeth.

Sheriff's Sgt. Ray Brady told The Olympian (http://bit.ly/17qfKmK) detectives are checking reports of missing persons and runaways as part of the investigation.