Police have finished recovering the body of a woman in Eastleach, Gloucestershire, and work is continuing to identify her.
Officers have been searching the site since the body of missing Swindon clubber Sian O'Callaghan was discovered 17 miles away last Thursday.
A police spokesman said that if they could not get a DNA match for the Eastleach body on their database, identification would take longer.
The scene has now been released.
The remains are thought to be those of a woman aged between 23 and 30.
Det Supt Steve Fulcher of Wiltshire Police has previously said it was indicated to him that the woman was taken from the Swindon area between 2003 and 2005.
"Forensic investigations to establish the identity of this young woman are ongoing using DNA and the speed of this identification process relies on whether or not we have her DNA on a database," the police spokesman said.
"If we don't get a DNA match further investigations will need to be carried out which may take some time.
"The public can be assured that we will of course inform the victim's family wherever possible before releasing any details in the media."
In separate developments, 47-year-old taxi driver Christopher Halliwell appeared before Swindon magistrates on Monday charged with the murder of Miss O'Callaghan, 22.
He was remanded in custody to appear before Bristol Crown Court on 30 March.
Miss O'Callaghan disappeared after leaving the Suju nightclub in Swindon a week last Saturday following a night out with friends.
Her body was found near Uffington, in Oxfordshire.