Police investigating the disappearance of Sussex man Gary Hampson have started searching land in Surrey.
Mr Hampson, 42, from Portslade, was last seen dropping his daughter off at her mother's house on 6 January.
Police said officers were searching for "signs of disturbance to the land" in Dunsfold Road and Tickners Heath in Dunsfold.
Officers have already searched 16 locations near the A281 north of Cowfold near Horsham in West Sussex.
They have also searched a stretch of the River Adur between Henfield and Cowfold and a number of ponds.
Det Insp Phil Mays said: "Officers are methodically looking for signs of a change to the ground or vegetation that would indicate a body has been left or buried."
The force began an inquiry after Mr Hampson's blood was found at Kops Cars garage in Brighton.
Police are also trying to trace the owner of a red Ford Mondeo that was seen at the garage in Little Western Street in January.
Daniel Alexander, 61, of no fixed address, has been charged with Mr Hampson's murder.
Mr Alexander has been remanded in custody.
A second man, Roy Bartup, 57, of Natal Road, Brighton, has been charged with conspiracy to pervert the course of justice.
A 48-year-old man and a woman, aged 66, both from Brighton, who were arrested on suspicion of murder, have been released on police bail.
A 25-year-old man from Brighton, who was held on suspicion of assisting an offender, has also been bailed.