The hunt for the body of a woman murdered by her husband will continue for a third day after failing to locate her remains.
Police have been digging on millionaire Adrian Prout's former farm at Redmarley, Gloucestershire, for the corpse of his wife Kate and have now widened the search area.
Last week Prout, 49, led officers to an area of 250 square metres on Redhill Farm where he said he had buried the former teacher.
The businessman had always denied murdering Mrs Prout but dramatically confessed in prison.
The excavation work, which started on Monday, is taking place in dense woodland on the 276-acre farm and police have cordoned off the area and nearby paths and bridleways.
Gloucestershire Police, who have been using specialist radar equipment, said that "nothing of significance" has been found so far.
Det Supt Simon Atkinson, who is overseeing the search, said: "Adrian Prout indicated to us that a plot of land measuring approximately 250 square metres was where he had buried Mrs Prout.
"We have subjected part of that area to ground penetrating radar testing and dug some of the ground with the assistance of a forensic archaeologist. However, nothing has yet been found.
"We are today widening the search area, working methodically outwards.
"This is a delicate and painstaking process. We are seeking advice from body deposition experts and the National Policing Improvement Agency in order to further the process."