The parents of Libby Squire, the missing university student, have described the “unending torture” they have suffered since her disappearance three weeks ago.

The 21-year-old vanished without a trace after a night out with friends in Hull, where she was an undergraduate student, on January 31.

Police are officially treating the case as a missing person inquiry, but sources have told The Telegraph that detectives believe she was abducted near her university home.

Her mother and father, Lisa and Russ Squire, released a poignant statement to mark the grim three-week milestone since her final sighting.