There was a "repeated failure" by probation officers to recall serial rapist Joseph McCann to prison, a report has revealed.
McCann was given 33 life sentences after being convicted of a series of offences against 11 women and children.
There were eight opportunities to recall McCann after he was freed from jail for a burglary offence, the Serious Further Offences report said.
Justice Secretary Robert Buckland promised an independent review.
A summary of the report said McCann should have been kept in jail at least until the Parole Board was satisfied it was safe to let him out.
It says there were eight occasions when this process - called "recall" - was considered.
