Yorkshire Ripper Peter Sutcliffe has been quizzed by detectives over 17 unsolved attacks.
The 70-year-old, who was arrested in Broomhall, Sheffield, after a killing spree in which he murdered 17 women and attempted to kill another seven, is reported to have spoken to detectives at HMP Frankland, Durham, where he is serving life behind bars.
According to The Sun, plain clothed detectives spoke to him about 17 unsolved attacks on women, which are said to bear similarities to the crimes for which he was jailed after a five year reign of terror between 1975 and 1980.
His first four victims were prostitutes, but he then moved on to members of the public.
He was dubbed the Yorkshire Ripper Sutcliffe because he mutilated his victims using a screw driver, hammer and knife.
Sutcliffe was arrested in Sheffield after he was found with a set of false number plates on his car and officers then realised he matched the description of the killer.
He was jailed in 1981.