French prosecutors said Friday they had requested a new murder trial for serial killer Francis Heaulme over a killing committed in 1989.
Heaulme, who has been in jail since 1992 and was convicted of 11 homicides, was dubbed the "Criminal Backpacker" by the media while he was active.
A court dropped an earlier attempt to try him for the 1989 murder of farmer Jean-Joseph Clement, who had his skull bashed in by a rock in the southeastern region of Vaucluse.
But prosecutors who reopened the file at France's cold-case unit said they now wanted to go to trial.
Heaulme, active between 1984 and 1992, is most infamous for the 1986 killings of two children who were also beaten with rocks.
The bodies of the two boys were found abandoned by a railway line.
Heaulme's conviction and life sentence for the children's murders was only finalised in 2020 after a last appeal was rejected.
The cold cases unit said in early April that Heaulme was in hospital, though they gave no further details about his health.
He is serving his sentence in a jail in eastern France that also houses notorious murderer Nordahl Lelandais and Dominique Pelicot, who allowed dozens of men to rape his drugged wife over a decade.