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Squire family
Detectives have been granted extra time to question a man arrested on suspicion of abducting student Libby Squire.
The 21-year-old University of Hull student went missing on 31 January after a night out in the city.
A 24-year-old man was arrested on Wednesday night at a house in Raglan Street, which is less than a mile from Ms Squire's home near Beverley Road where she was last seen.
Her family said the disappearance was "very out of character".
Humberside Police said it was "still treating Libby's disappearance as a missing person's inquiry".
Det Supt Matt Hutchinson said the force was granted a further 36 hours to question the arrested man from 09:11 GMT.
Detectives believe Ms Squire - a philosophy student, whose full name is Liberty Anna - went home in a taxi home at about 23:30 on 31 January but did not enter the house.
Her mobile phone was found there but it "has not provided any further insight as to where she may be or her movements that night", the force said.
Ms Squire, from High Wycombe in Buckinghamshire, was later seen on CCTV near Beverley Road where a motorist stopped to offer her help.
Police previously said both the taxi driver and motorist were "not suspects".
Officers continue to search Oak Road Playing Fields, close to where the student was last seen.
Ms Squire, who is 5ft 7in tall and has long dark brown hair, was wearing a black leather jacket, black long-sleeved top and a black denim skirt with lace when she went missing.