POLICE in Swindon investigating the murders of Sian O’Callaghan and Becky Godden-Edwards think there may be more victims.

A police source last night confirmed that teams of officers have been trawling the missing person databases and officers may again question Chris Halliwell, the 47-year-old mini-cab driver charged with killing Sian, about other missing women.

He said: “We are looking at the possibility that there may be more bodies. We are piecing together information from missing person reports.”

Halliwell, of Ashbury Avenue, Nythe, who is on bail pending further enquiries into Becky’s murder, was remanded in custody at Bristol Crown Court last week and is awaiting a further court hearing.

Becky’s body was buried at Eastleach, in Gloucestershire.

Police have not ruled out that she may have died from head injuries. Sian is also believed to have died from similar injuries.

An officer close to the investigation said: “It has not been ruled out but there is little indicative information on the body. It was deposited in a ploughed field at a shallow depth.

“The grave was dug little more than the depth of the topsoil, which is around a foot.

“At first it was thought it might have been a mistake because the digging turned up nothing. The topsoil was thin and then below that it was thick clay.

“You could not physically dig much deeper and that is why they called the mechanical diggers in.

“She was not clothed and the body was exposed. There were no traces of clothing so the body was naked when it was put there.

“The conclusion of the post-mortem was unclear on the cause of death because we are dealing with a skeleton.

“We are still unclear as to the time of the offence but we are still working on between 2003 and 2005. It is looking likely it is early 2003.”

The source said the news of Becky’s death was broken to the family, who still hoped she would return, on the day of their daughter’s 29th birthday, on Monday.

“Becky comes from a lovely family and they are devastated by her loss,” said the officer.

“Their reaction was so strong – it was traumatic for them. They lived in hope that she would be reconciled one day.

“They reported her missing in 2007 but she had been missing for some time before that – she had become disconnected from her family and developed a drug addiction.

“She was about 21 when she was last seen and her parents thought she had moved to Bristol after she left home in 2003.

“They were a very happy family but it seemed to happen shortly after a school incident. She did not go to university and it was when she was around 21 that things started to go wrong.

“She got into bad company – her family blamed her boyfriend of the time leading her down the path of abusing drugs.”