The stepson of a man reported to have slashed Soham killer Ian Huntley's throat in jail said today he "did it for Holly and Jessica".
Damien Fowkes, 34, is said to have cut 36-year-old Huntley's throat during an attack at Frankland Prison in Co Durham.
Today, Fowkes's stepson Lewis told The Sun: "He did it for Holly and Jessica and I'd like to pat him on the back.
"Most people will think Damien is a hero. I think he should be given a medal. The only pity is he didn't do a better job."
Fowkes's mother Jayne, 51, said her son has a daughter near the age of 10-year-olds Holly Wells and Jessica Chapman, who were murdered by Huntley in Soham, Cambridgeshire, in 2002.
Ms Fowkes told the newspaper: "He loves his daughter so much and I'm wondering if that's what set him off."
Fowkes, from Northampton, was reportedly jailed for life in 2001 after carrying out a knifepoint robbery so he could get money for drugs.
Earlier today it emerged Huntley could be awarded £20,000 compensation if he sues the Prison Service for negligence.
The Prison Service has not said what Huntley's current state is , but said after the attack that his condition was not life-threatening.
A spokesman said: "A prisoner at HMP Frankland was assaulted by another prisoner at about 3.25pm on Sunday March 21. The prisoner was taken to outside hospital for treatment but has now returned to prison."
Prison officials have launched an investigation into what happened.
It was reported that Huntley's throat was slashed with a makeshift knife, and the child killer was found by prison staff lying in a pool of blood.
He was convicted in December 2003 of murdering Holly and Jessica after they vanished from their homes in Soham in August 2002.
He is serving two life sentences for the murders, which shocked the country.
Huntley, a caretaker at the secondary school in Soham, and his then girlfriend Maxine Carr, a teaching assistant in Holly and Jessica's junior school class, initially told police they knew nothing of the circumstances surrounding the girls' disappearance.
But it emerged at their trial at the Old Bailey that Huntley had met Holly and Jessica as they walked past his home, enticed them inside and killed them before hiding their remains.
Carr was jailed after being convicted of perverting the course of justice and has now been released from prison.
The assault on Sunday afternoon is not the first time Huntley has been attacked in prison.
An inmate threw boiling water on him while he was on the healthcare wing at high-security Wakefield Prison in West Yorkshire in September 2005.
He has also tried to commit suicide while in prison on three occasions.
He was moved to HMP Frankland, a Category A high security men's prison, in 2008. That year, HM Inspectorate of Prisons raised concerns about violence at the jail.