Ian Huntley, the former school caretaker who murdered two 10-year-old schoolgirls in Soham, died on Saturday following an attack in prison.
The 52-year-old suffered significant head trauma after being attacked with a makeshift weapon by another inmate at HMP Frankland on 26 February and had been on life support in hospital, as first reported by the Sun newspaper.
He had been serving a life sentence with a minimum term of 40 years for murdering best friends Holly Wells and Jessica Chapman in 2002.
Police Response
Durham Constabulary have said they are preparing a file for the Crown Prosecution Service for the consideration of charges.
A spokesperson for the force said a police investigation into the circumstances of the incident is ongoing.
Background
Holly and Jessica vanished after leaving a family barbecue in their small town near Cambridge in August 2002.
It is believed they were on their way to buy sweets when Huntley, then aged 28, lured them back to his home and killed them.
Investigation
The BBC understands that triple killer Anthony Russell, 43, is suspected of attacking Huntley.
Sources previously told the BBC that Huntley was found lying in a pool of blood after being bludgeoned with a makeshift weapon at a workshop at the high security prison in County Durham.
