Police have been granted extra time to question the landlord of Joanna Yeates, who is being held on suspicion of her murder.
Officers can now quiz Chris Jefferies until around 6pm on Friday evening when they have the option of applying for a further extension.
Retired public school teacher Mr Jefferies, 65, was arrested on Thursday at his flat directly above the basement Victorian property he rented to the 25-year-old landscape architect and her boyfriend Greg Reardon, 27.
The bachelor's arrest came just 24 hours after he claimed he had seen three people leave Miss Yeates' flat in Canynge Road, in the upmarket area of Clifton, Bristol, on the night she vanished.
Neighbours have described Mr Jefferies, who sports a distinctive mane of straggly white hair, as a "nutty professor type" who was active in his community - playing a prominent role in his local Neighbourhood Watch group.
Miss Yeates was last seen on December 17 and her snow-covered body was found on Christmas morning by a couple walking their dogs in Longwood Lane in Failand, North Somerset. She had been strangled.