In the ongoing trial in Paris regarding the murder of Nathalie Debaillie, the victim's family has brought a case against the French state for alleged negligence in the response of law enforcement to repeated reports of harassment and threats against her.

Nathalie Debaillie was killed on May 27, 2019, by her former partner, Jérôme Tonneau, shortly after being abducted by him and three accomplices at a bank parking lot in Lille.

Tonneau, 53, was sentenced to thirty years of imprisonment in July 2024 for the crime.

Before her death, Debaillie had approached police on four separate occasions within three months to report the harassment and threats made by Tonneau.

She first filed a report on February 11, 2019, detailing Tonneau's refusal to accept their separation, his persistent attempts to contact her, and his expressed intent to enter her home.

On March 5, she reported an incident where Tonneau had followed her from her workplace to the elevator.

On March 9, Debaillie escalated her complaints by filing a formal complaint for threats against her life after being informed by friends that Tonneau planned to imprison her in a car trunk and kill her.

These warnings highlighted the severity of the threat she faced and the urgency of her situation.

The accumulation of these incidents has led critics to question the effectiveness of police intervention in cases of domestic violence and harassment.

The trial of Tonneau is part of a broader societal discourse in France on the treatment of domestic violence victims and the responsibilities of law enforcement agencies.

Activists and family members have raised questions regarding systemic failures that allow such tragic outcomes to occur, particularly when victims have taken proactive steps to report threats to their safety.