Black cab rapist John Worboys will remain in jail for at least another two years after losing a new Parole Board review.
The decision is the second in eight months preventing the 61-year-old from being released after he was found guilty in 2009 of attacking 12 women.
A Parole Board spokesman said: "We can confirm that a panel of the Parole Board gave a negative decision in the parole review of John Worboys following an paper hearing in October 2018.
"Under current legislation Mr Worboys will be eligible for a further review within two years. The date of the next review will be set by the Ministry of Justice."
Worboys has 28 days to request a hearing to dispute the decision.
Worboys picked up women late at night in his job as a London taxi driver, telling them he was celebrating winning the lottery or a casino win before plying them with sedative-laced champagne.
He then sexually assaulted or raped them.
Police say there could be 105 victims of Warboys between 2002 and 2008, before he was caught.
In August, Worboys is believed to have been questioned by police over fresh allegations of sexual assault, by "a number of women".
He was jailed indefinitely in 2009 with a minimum term of eight years, but last year the Parole Board decided it was safe to release him.
In March, when he was set to be freed, two of his victims successfully blocked his release.
There was an outcry from his victims and the public, with London Mayor Sadiq Khan bringing a challenge with the two victims via a judicial review.
After the High Court overturned the board's decision, its chairman, Nick Hardwick, quit saying he was "sorry for the mistakes that were made in this case" but that he was not on the decision panel at the time.
He admitted that the panel should have taken into consideration the alleged crimes for which Worboys has not been convicted of.
Although police believe Worboys committed more than 100 similar crimes, the CPS decided not to overload the indictment by prosecuting him for every attack.
More from John Worboys
Dozens of women were told the prosecution would be more powerful if the court heard only the strongest cases.
Justice Secretary David Gauke admitted responsibility for the decision which nearly led to the black cab rapist's release, after he decided not to challenge it.