Police were called to HMP Lincoln on Thursday morning after a report that a man had died in the early hours.
A murder investigation has been launched and a 35-year-old male inmate has been arrested in connection with the incident.
Peterborough Prison has been criticised by the Howard League for Penal Reform for the number of self-harm incidents which have been recorded there.
The charity says 24 self-harm incidents were recorded every week at Peterborough last year.
Peterborough Prison holds both men and women.
Women represent one in 20 people in prison but they make up half of all self-harm incidents.
Nick Hardwick, the Chief Inspector of Prisons said the performance of HMP Hewell had 'deteriorated sharply' since the last inspection.
"There are significant concerns about HMP Hewell whose performance has deteriorated sharply since our last inspection.
Much of the prison provided an unsafe and degrading environment for staff and prisoners alike.
The prison now needs support and stability to halt and reverse this slide in performance. "
A report into conditions at HMP Hewell in Redditch by the Chief Inspector of Prisons found that its performance had deteriorated sharply since the last inspection.
According to the report, thirty five per cent of prisoners on the closed side and 42% on the open side said it was easy to get drugs in the prison.
And 17% on the closed side and 36% on the open side said it was easy to get alcohol.
The inspectors said the figures were much higher than they see in comparable prisons.
Hewell prison in Redditch has been heavily criticised in a damning report, claiming the environment is dangerous, dirty and drug-ridden.
The report, carried out by the Chief Inspector of Prisons, claims drugs and alcohol are more readily available than cleaning materials.
Shrewsbury Prison is going to close, along with 5 others across the country, under government plans announced today. The idea is that one 'super prison' will be built in their place.
It is part of a drive to replace older jails and bring down the cost of the prison system. It is expected to save £63 million a year.
Terror suspect Abu Qatada is due to be released from a prison near Evesham in Worcestershire today, after winning his battle against deportation to Jordan.
Judges at the Special Immigration Appeals Commission ruled that evidence gained through torture could potentially still be used against the radical cleric, denying him the right to a fair trial.
A Derbyshire man convicted of murder in 1867 was sent to the other side of the world to pay for his crime.
Daniel Marsh was one of thousands sent across the seas to Australia to free up space in British prisons. Which at the time were at full capacity.
Throughout his time in prison he sent letters home to the UK about his life in prison.
The letters being auctioned on Friday, have been described as the only known letters of this kind.
A man who absconded from an open prison in Lincolnshire has been living in Wolverhampton for four months claiming Jobseekers' Allowance.
Brendan Ryan had been serving time at North Sea Camp open prison for arson and threatening to kill a woman. He absconded in December last year and was not detained until April.
"Lincolnshire Police worked closely with HMP North Sea Camp to locate and recapture Brendan Ryan. All known addresses linked to him were checked and enquiries were made with West Midlands Police and other forces and agencies. Comprehensive intelligence logs were submitted in relation to his background information at the prison and the possible reasons for him absconding or potential whereabouts. Lincolnshire officers made contact with key people who were linked with him.
"The policy for dealing with absconders is that we work with the prison to decide on appropriate action/publicity according to each individual case/circumstance. The Prison/Home Office press office will tend to lead in terms of media and publicity for absconders. Other forces including West Midlands Police were contacted as part of the efforts to locate him."
Full report by Keith Wilkinson on the prisoner who absconded from jail in Lincolnshire and was claiming Jobseekers' Allowance in Wolverhampton