Emile Louis, an ostensibly harmless bus driver who became one of the most notorious serial killers in French history, has died at the age of 79.

The wife of confessed serial killer Michel Fourniret has alleged that her husband killed six more young women, bringing the total number of murders police are investigating to 19.

Four former investigating magistrates, facing allegations of negligence because a serial killer slipped through the cracks of France’s justice system, faced a disciplinary panel today.