The Yorkshire Ripper, jailed for life in 1981 for the murder of 13 women in England's north, is in hospital after reportedly suffering a suspected heart attack.
Serial killer Peter Sutcliffe feared he might contract coronavirus in prison before he was rushed to the Accident and Emergency department, the Sun reported.
The 74-year-old is being treated at the University Hospital of North Durham, which is near the maximum-security Frankland Prison.
According to the newspaper, he has been handcuffed to a bed in a private room and is being treated in a cardiology ward away from other patients.
The Ripper, who is serving life for the murder of 13 women across Yorkshire and the North West between 1975 and 1980, has struggled to breathe in the last week and has slept badly, the report said.
He was taken to hospital on Wednesday evening.
A Ministry of Justice spokesman said: "We don't comment on individual prisoners."