Police brought the man in for questioning on Wednesday (21 August), and held him for 24 hours but later released him under investigation. This means that a decision still has to be made as to whether or not they can charge him for Libby's murder.
Detective Superintendent Martin Smalley said in a statement "The investigation is very much live and continuing."
A huge-scale investigation began soon after, and the same man that has been in police custody this week was arrested early on, on suspicion of her abduction. Police combed his home, sealing off the two-bed and towing away his car. He was then questioned for 96 hours before being released under investigation.
The arrest earlier this week marks the second time the man has been brought into police custody for a crime related to Libby Squire's disappearance.
"The majority of the additional analysis stage is now complete, with a small number still pending final results. A file is being prepared for the Crown Prosecution Service as the investigation progresses."
What happened to murdered student, Libby Squire?