EDINBURGH, Scotland  —  Two schoolgirls playing on a Scottish beach found a woman's severed head, police said Tuesday.

The girls found the head wrapped in a plastic bag on a beach outside Arbroath, about 55 miles (90 kilometers) south of Aberdeen. A hand and other body parts were found later.

"They were upset by the discovery and their parents contacted the police," said Detective Chief Inspector Graham McMillan of Tayside Police.

Part of the beach remains cordoned off, as 40 officers comb the area for evidence.

Police have not released details of the dead woman's race, identity or age but say the head does not appear to be linked to any pending murder or missing person investigation.