[1] Helmut Knochen, Chief Commandant of the Sicherheitspolizei (Nazi Occupying Security Services)[2] ordered the attacks on the Paris synagogues.

In a journal entry dated September 11, 1942, writer Hélène Berr, wrote: After wandering all afternoon (Boulevard Saint-Germain, the Sorbonne, Condorcet), I went to the Temple for Rosh Hashana.

[6] From research by Patrick Fournie (2016): The Revolutionary Social Movement of Eugène Deloncle, former leader of the Cagoule, also recruited several thousand members and was known above all as the executor on behalf of the SIPO-SD in the attacks on the Parisian synagogues on the night of October 2–3, 1941.

Deloncle nevertheless lost the support of his protectors and was executed by the Gestapo in November 1943.According to Frédéric Monier (2011): After the fall of France and the creation of the Vichy Regime, a majority of former "Cagoulards" became engaged in collaborationist activity, often under the guise of the Revolutionary Social Movement – the MSR – created by Eugène Deloncle in Autumn 1940.

It was this group that was responsible "without a doubt, among others, for the attacks against synagogues in Paris and the assassination of former government minister Marx Dormoy.Hans Sommer, agent with the Nazi intelligence services in charge of France, contacted Eugène Deloncle in 1941.

According to the Vichy correspondent of the Swiss newspaper Feuille d'Avis de Neuchâtel et du Vignoble neuchâtelois, on Saturday October 4, 1941:On the night of Thursday and Friday in Paris between 1 am and 5 am, attacks took place against seven synagogues.

It is noted that the third attack against the Israelite Temples took place on the night following Yom Kippur.A police report by the Renseignements généraux dated October 4, 1941, said: Generally, the Parisian public don't like the Jews, but they are tolerated.