An independent review is to take place into the conduct of the police and probation service after a sex attacker killed a woman while on parole.
The body of Naomi Bryant was found at her Winchester home
Anthony Rice, 48, strangled and stabbed to death mother-of-one Naomi Bryant, 40, at her home in Winchester, Hampshire, in August.
Rice left jail in November 2004 after serving 16 years for rape, indecent assault and actual bodily harm.
He was staying on licence at a charity hostel when the killing took place.
He was sentenced to life at Winchester Crown Court on Friday after pleading guilty to the murder of Miss Bryant and wounding with intent another woman he had attacked with a brick in Southampton.
A Hampshire Police spokeswoman said Rice was considered so dangerous he was part of "multi-agency public protection arrangements", which were to closely monitor him and enforce a curfew.
The arrangements were supposed to lead to close supervision of Rice.
"There has been an internal inquiry and now all agencies involved have requested an independent review from the Inspectorate of Probation.
"We will not be releasing the findings of our review," the spokeswoman said.
Chief officer of Hampshire Probation Service Barrie Crook added that he was in discussions with the Inspectorate of Probation about the form of the review because normally ministers request it.