Peter Sutcliffe, the man dubbed 'The Yorkshire Ripper', will be the subject of a new documentary on ITV tonight.
Sutcliffe was found guilty of murdering 13 women and attempting to kill another seven between 1975 and 1980.
Tonight's two-part documentary attempts to look at if Sutcliffe was responsible for more deaths and attacks.
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The opening episode takes a look back at the murders of Judith Roberts in 1972 and Carol Wilkinson five years later, and the two innocent men wrongly convicted for the crimes.
The second part airs tomorrow.
What happened to Peter Sutcliffe?
In 1981, he was convicted of murdering thirteen women and attempting to murder seven others.
He was diagnosed with paranoid schizophrenia. He served 20 sentences of life imprisonment in Broadmoor High-Security Hospital.
In 2016, Sutcliffe was moved to HMP Frankland in County Durham.
On November 13 2020, Sutcliffe died with Covid at University Hospital of North Durham.
Details at the inquest and in a report by the Prisons and Probation Ombudsman said at the time of Sutcliffe's death he had long-term health problems including Type 2 diabetes and heart conditions.
He had been admitted to hospital on November 2 2020 for a heart pacemaker to be fitted.
However, his health deteriorated and on November 13 after being readmitted to hospital, Sutcliffe died.
The cause of death was recorded as being 'due to SARS Cov2 pneumonia'.
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