Soham double murderer Ian Huntley remains in hospital in a serious condition after being attacked with a makeshift weapon by another inmate. The BBC understands that triple killer Anthony Russell, 43, is suspected of attacking Huntley. Huntley, 52, has suffered significant head trauma from his injuries and is undergoing treatment. He is serving a life sentence with a minimum term of 40 years for murdering schoolgirls Holly Wells and Jessica Chapman in August 2002. In an update on Friday, Durham Constabulary said there had been "no change in the 52-year-old man's condition overnight - he remains in hospital in a serious condition". Previously police said a male prisoner in his mid-40s suspected of carrying out the attack was "in detention" but had not been arrested "at this stage". The force also confirmed a police investigation is under way and that detectives are liaising with staff at the prison.…