A firebomb was thrown at a kosher Jewish restaurant in the 17th district of Paris at week’s end.

Several minutes earlier, some young Muslims who walked by the restaurant threatened the diners inside and called them “dirty Jews.” The diners did not react.

A few minutes passed, and a loud smash was heard when a firebomb hit the restaurant’s door. The diners managed to see a group of Muslims running away as the firebomb ignited, starting a fire, which the restaurant’s employees succeeded in putting out. None of the restaurant-goers was hurt.

The restaurant door was reportedly made of tempered glass, a factor which may have saved the clients inside the eatery from harm.

Police were called in and they examined security camera footage as part of the investigation.

The restaurant is mehadrin-kosher and serves the religious Jews in the area.