Quadruple killer Damien Bendall has allegedly hospitalised a fellow inmate in a 'horrendous' hammer attack, it has been reported. 

Bendall, who was originally from Swindon, brutally killed his pregnant girlfriend Terri Harris, her children John Paul and Lacey Bennett, and Lacey's friend Connie using a claw hammer at a property in Chandos Crescent, Killamarsh on September 18, 2021. 

During his sentencing in December 2022, the court heard how Bendall went from room to room, systematically stalking and killing 35-year-old Harris and her 11 and 13-year-old children, as well as 11-year-old Connie.

He also admitted to raping Lacey as she lay dying. 

Bendall is currently serving a whole life order in Durham prison HMP Franklin where he is now alleged to have committed another attack with a hammer, this time hospitalising a fellow inmate who, according to a source who spoke to The Sun, 'may not pull through'. 

It is understood that Bendall was able to access the hammer because he and the victim were taking part in a workshop at the time. 

Swindon Advertiser: Damien Bendall was given a whole life order for murdering his pregnant partner and three children,

The source told The Sun that the victim was struck three to four times and added: "This is a shocking and horrendous attack even by the standards of Frankland, which is a grim and violent place.

"The prison officers and medics who attended were traumatised. Police will investigate it as either attempted murder or murder, depending on whether the victim survives. Bendall has been put into a segregation unit."

Durham Constabulary has confirmed an investigation is underway, but did not name Bendall as being linked to the assault.

A spokesperson said: "An investigation is underway following a serious assault which occurred at Frankland prison, Durham on Friday (May 10) The victim was taken to hospital to be treated for his injuries. Enquiries are now ongoing."

In addition, a Ministry of Justice spokesperson did not deny the allegations, stating: "We cannot comment on a live police investigation but prisoners who are violent face tough punishments."

When he committed the murders Bendall was on probation, and a review into his handling found failings in the probation service

Vital information about the serious risks posed by Mr Bendall to those he lived with, and the public, was not included in the Probation Service’s report and recommendations to the judge when he was sentenced for an arson offence that took place in Swindon in June 2021.

As a result, he was sentenced to an entirely inappropriate curfew condition to reside with Ms Harris and her children.