PARIS — A Socialist politician in France and his partner said they were verbally assaulted by a group who shouted an anti-Semitic slur as well as support for the far-right National Front Party.

Arnaud Montebourg, a leading Socialist politician, and his partner, television broadcaster Audrey Pulvar, said Wednesday that a group of approximately 15 people called them “Juden” the previous day as they were leaving a restaurant in a high-end western Parisian neighborhood. Neither are Jewish. They said the group also shouted “Le Pen for president,” referring to Marine LePen, leader of the far-right National Front Party, and “France for the French.”

Police are investigating the incident, Reuters reported.

LePen condemned the incident, but said police would have to investigate whether members of the group were truly attached to her party.

Montebourg has been a sharp critic of what he describes as Le Pen’s ties to neo-Nazi groups in Europe.