The rapist, Sean Perry, 46, who is also known by the surnames Cawthray and Goldstone, was last seen at his address in the city centre at around 2pm on Monday, June 19.
It is reported that he failed to return later that day, which ultimately has led to a breach of his prison licence.
It is important to note that anyone who sees Perry is being urged not to approach him, and to call the police immediately.
Perry was given a life sentence in December 2002 at Leeds Crown Court after kidnapping a schoolgirl near Leeds.
He had been in prison twice previously for rape.
Sean Perry grabbed his 14-year-old victim by her hair at a bus stop and began pulling her down a back alley towards a stream, putting his hand over her face, court documents show.
The petrified girl was finding it hard to breathe and it was when her struggles drew the attention of a young boy playing in a garden nearby that the alarm was raised and police were alerted – Perry was subsequently arrested, charged and jailed.
This isn’t the first time the sex Offender has gone on the run, in December 2013 he absconded from Leyhill open prison – he was later caught following a manhunt.
If you have seen him or someone who matches this description, or you know where he might be, call police on 101.