New footage of missing student Libby Squire on the night of her disappearance has emerged.
The CCTV images show a woman, confirmed by police as the 21-year-old student, near the Welly Club music venue on 31 January at about 23:20 GMT.
Police are continuing to search an area close to the last known sighting of Libby, from High Wycombe.
A 24-year-old man arrested on suspicion of abduction remains a person of interest, police said.
The video, filmed by a camera on a lettings agency next door to the club, shows Libby in a black jacket and a black skirt.
The 21-year-old is believed to have taken a taxi from the nightclub after she was refused entry.
Police said she was dropped off near her home at about 23:30 and was then seen near a bench on Beverley Road about 10 minutes later.
One area of interest in the police search has been the Oak Road playing fields in the city, with officers returning on Tuesday and using power tools to cut back undergrowth.
On Wednesday, divers carried out further searches in a pond at the location.
Humberside Police said hundreds of uniformed officers and around 50 detectives have been searching "around the clock" for Libby, with specialist search advisors, underwater officers, the fire service, police dogs, local businesses and the public also involved.
The force said: "Our priority remains to find Libby and support her family at this incredibly distressing time."
Officers have posted letters to people living near to Raglan Street asking if anyone heard "anything unusual" on the night of her disappearance.
Police have carried out house-to-house inquiries in Hull, and a dog unit, police divers and helicopter have all been used as part of the search effort.
The force said it had "received hundreds of calls" and was pursuing a number of lines of inquiry.
On the night of her disappearance, detectives think she arrived at her student house at about 23:30, where her mobile phone was found.
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They do not believe the University of Hull student entered the house and have said her phone "has not provided any further insight as to her movements that night".
She was spotted on CCTV 10 minutes later near a bench on Beverley Road, where it is thought a motorist stopped to offer her help.
She is believed to have been in the area for about 30 minutes.
Ms Squire, who is 5ft 7in tall with long dark brown hair, was wearing a black leather jacket, black long-sleeved top and a black denim skirt with lace when she was last seen.