The media quoting unnamed sources close to the autopsy said that the male victim is a foreigner but not an Asian. The woman is thought to be Thai.
Further details on this are expected by Monday.
Yesterday Chokechai police chief Pol Col Bunprote Prasertsak held a meeting with investigators to round up the latest developments in the case.
The victims, said Thai Rath, were encased in some kind of plaster or cement.
They were both shot in the head.
Police have been trying to get a lead through CCTV but initial examinations of the woman's body are proving to be the best chance yet of establishing who she, and her partner, were.
The woman had a crown tattoo on her back and another tattoo of a string of flowers circling her right wrist. Pictures of these have been circulated by the police. Thai Rath did not publish any.
Even more promising is the fact that the woman had had breast enhancement surgery and there is a serial number and microchip in the silicone.
Online information suggests that some breast implants do indeed contain chips, notes ASEAN NOW.
Police are contacting businesses that perform such surgery in the hope that this will identify the woman and subsequently her partner.
Yesterday we reported that there were no reports of missing people in the area where the bodies were found in a 1.5 meter deep grave some 400 meters from a road near the village of Ban Por Phran.