A murderer who told staff he never wanted to enjoy his freedom again died in prison.

In 2007 Russell Gainford was jailed for murder, burglary and sexual assault.

Gainford was being held in HMP Frankland - where some of Britain's most notorious criminals are held - including Ian Huntley and the Yorkshire Ripper, reports Chronicle Live.

The nature of the infamous inmates has earned the County Durham jail the nickname 'Monster Mansion'.

Gainford, who had a raft of health problems, died last October at the age of 71.

Inmates at the prison are known to be some of the country's most dangerous

A new report into the killer's death has revealed that weeks earlier, he was admitted to hospital due with pneumonia.

"The doctor said that Mr Gainford’s illness was due to infection and old age, and all treatment options had been exhausted," states a Prisons and Probation Ombudsman report.

"The doctor decided to stop treatment and treat the symptoms only."

In September, hospital staff discussed a Do Not Attempt Cardio pulmonary Resuscitation (DNACPR) order with Gainford who agreed that if he stopped breathing he "did not want to be resuscitated".

Days later, he was sent back to the Category A prison for end of life care and placed in the palliative care suite.

"On 20 September, prison staff discussed early release on compassionate grounds with Mr Gainford," adds the report.

"However, Mr Gainford said that he did not wish to be considered for early release and would prefer to die in prison.

"Over the next month Mr Gainford’s health deteriorated. On 12 October at 5.30am, healthcare staff found that Mr Gainford had stopped breathing.

"A prison nurse confirmed that Mr Gainford had died."

The post-mortem concluded that he had died from broncho pneumonia, caused by chronic obstructive pulmonary disease.

The watchdog, which investigates every prison death, found no fault with the care he received in his final days.

The killer only received a minimum six year sentence when he was jailed.

However, after being moved to HMP Frankland in 2008, he was never released having spent over a decade behind bars.

He was the seventh prisoner to die at HMP Frankland since October 2017. Of the previous deaths, five were from natural causes, and one was self-inflicted.