Mystery bones found at SA cemetery

Bones have been found at a South Australian cemetery but the remains aren't in a grave, prompting a police investigation.

A pile of human bones have been found at a South Australian cemetery - but not in a grave.

Mystery surrounds the anonymous remains which were found at Ardrossan Cemetery at Maitland on Yorke Peninsula on Monday, with the grim discovery prompting a police investigation.

Forensic police and state emergency services are searching the cemetery for further clues.