
Michel Fourniret was a French serial killer convicted of multiple murders committed in France and Belgium between the late 1980s and early 2000s.
Michel Fourniret became one of the most notorious serial offenders in modern French criminal history. His crimes were committed across France and Belgium over many years, with victims including girls and young women. He was arrested in Belgium in 2003 after an attempted abduction.
The investigation accelerated after Fourniret’s then-wife, Monique Olivier, gave police information connecting him to multiple disappearances and killings. Fourniret eventually confessed to a number of murders, and investigators linked him to additional cases through his statements, searches and accumulated evidence.
In 2008, Fourniret was convicted of multiple murders and sentenced to life imprisonment without the possibility of parole. He later received another life sentence in a separate case. Olivier was also convicted for her role in several crimes and received lengthy prison sentences.
Fourniret continued to be questioned about older disappearances. In 2020 he confessed to killing nine-year-old Estelle Mouzin, who disappeared in 2003. Fourniret died in 2021, leaving investigators to continue reviewing cases in which he may have been involved. The history of the investigation illustrates how serial cases can cross borders and remain open long after a principal offender is convicted.