POLICE officers are searching a Gloucestershire field to find clues to the whereabouts of the second body in the Sian O'Callaghan murder investigation.

Officers started the "painstaking" search in Eastleach last night and are still at the site.

They have set up roadblocks on five roads around the Gloucestershire villages of Eastleach Turville and Eastleach Martin, which is about 10 miles north of Swindon.

A large police van was parked in a field and a team of forensic officers were examining the site.

Detective Superintendent Steve Fulcher, who is leading the investigation, said the 47-year-old who has been arrested, named locally as Chris Halliwell, took him to two seperate locations yesterday.

Yesterday police found a body, believed to be that of the missing 22-year-old, at the second site in Uffington.