A man has admitted being the notorious Yorkshire Ripper hoaxer known as "Wearside Jack".
But former window cleaner John Humble, 50, from Sunderland, denies four charges of in-tending to pervert the course of justice and is due to go on trial at Leeds Crown Court in March.
The charges are in connection with a series of letters and an audio tape which were sent to West Yorkshire Police during the hunt for the Yorkshire Ripper, Bradford lorry driver Peter Sutcliffe, more than 25 years ago.
Defence counsel David Taylor told Leeds Crown Court: "A defence statement has now been drafted whereby the defence concedes that he wrote the letters, and in fact made the tape. The issue now is not one of whether it actually was him, it's solely the question of in-tent."
Sutcliffe, now 59, was jailed for life for the murder of 13 women. Sutcliffe is also suspected of attacking two women in the Keighley area.
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