Jane Longhurst went missing in March

Sussex Police will be stopping drivers around the woods near Pulborough, West Sussex, where Miss Longhurst's burning body was found one week ago.

They believe the body could have been dumped within an hour of it being discovered at 2035 BST on 19 April.

Miss Longhurst, 31 disappeared from her home in Brighton six weeks ago.

A 35-year-old man, who had been questioned in connection with the murder, was released on police bail without charge on Friday night.

Somebody may have seen somebody carrying something heavy Sussex Police spokesman

More calls about the murder were made to police on Friday and forensic experts are continuing to search a flat in Hove, Sussex.

A Sussex Police spokesman said: "There's still lots of work to be done, a lot of forensic work, a lot of inquiry work.

Officers are optimistic checks of motorists near the site where she was found will find more witnesses.

The spokesman said: "What is perhaps slightly unusual is, because the body was found on fire, there is actually quite a tight timescale when we think Jane was left there.

"That gives us a specific focus this evening, on this one week anniversary."

He added that there may have been motorists who used the A283 on Saturdays to visit relatives.

Police will return to where Ms Longhurst's body was found

"Somebody may have seen somebody carrying something heavy.

"It's often with hindsight people realise what they have seen was significant."

Police are still appealing for anyone who was on the common that day to come forward and particularly want to speak to the driver of a dark brown or green Ford Focus parked nearby.

Miss Longhurst, who was originally from Reading, went missing on 14 March from the home she shared with her partner Malcolm Sentance in Brighton.

Detectives believe she was strangled shortly after her disappearance and her body kept somewhere cool for up to five weeks.

They suggested her killer panicked over the Easter weekend by deciding to dump and set light to her body in an area visible from footpaths and roads.

On Wednesday, police said items found near to where the body was discovered, including a match, a box of matches and Jane's watch, had given them a significant breakthrough.